JENNER AND VACCINATION
A Strange Chapter of Medical History
Prisca fides facto, sed fama perennis.--VIRGIL: Æneid, ix
London:
SWAN SONNENSCHEIN & CO
PATERNOSTER SQUARE
1889
[This is the orginal format of book, in HTML. To see a reformatted one with bookmarks go here.]
THE object of this book is to make clear to general readers the steps in the rise and acceptance of Jenner's doctrine and practice of vaccine inoculation. The assent of the profession both at home and abroad having been given within the first two or three years, the history has been followed most closely for those years. The subsequent establishment, endowment, and enforcement of the doctrine and practice are narrated with less minuteness in the concluding chapters. The history being a somewhat strange one, it has been thought desirable to authenticate the facts by full references. The events herein narrated and criticised are remote enough from our own day to have become fitting matter for historical treatment. In medicine new developments of theory and practice are so closely bound up with the legitimate professional standing and repute of their authors that it is always a matter of delicacy to subject them to contemporary criticism of the more rigorous kind. But there need be no such reserve in dealing with medical affairs that lie well within the limits of history. The medical profession of this country, it is true, has offered no great encouragement to those who would touch even the history with a hand of criticism. But the public can hardly be expected to share that pious feeling so far as concerns a practice that is brought home to every one by the law; the historical origins, or the roots of authority, may here be laid bare without compunction. In most other affairs of the past it is not only permitted to historians, but even expected of them, that they leave no stone unturned.
Technical language has been avoided as far as posible, and has, indeed, been little needed in dealing with a subject which is a commonplace of every household. Some of the points the author has been enabled to pass over briefly with a reference to a former book written for his own profession. He has been enabled also to curtail where his immediate precursor in the history of vaccination, Mr. William White, has been most copious. Those who are acquainted with Mr. White's able and accurate historical inquiries will find that the present work for the most part covers new ground.
London,
February, 1889
CHAPTER
1. Jenner's scientific credit before vaccination.
Jenner and John Hunter.—Banks' and Cook's Expeditions.— Hunter's
Letters.—Hibernation.—The Cuckoo.—Paper for the Royal Society. —Elected
Fellow.—Theory of Cuckoo's Instinct.—Jenner's Originality.—A Wondrous
Tale.—Imaginative Anatomy of Cuckoo's Back. —Accepted by Ornithologists
..... pp. 1-18.
CHAPTER 2. THE POX, THE SMALLPOX, AND THE COWPOX.
The Folklore of Cowpox.—The Legend a Localized One.—Origin of the
Legend.—Benjamin Jesty.—A Second Theme for the Royal Society.—Origin of
the Name " Smallpox."—Origin of the Name "Pox."—Why the Pox so Called.—Why
Cowpox so Called.—The Legend to be made
Scientific.—Jenner's Notions get Wind.—His Paper Returned
by the Royal Society.—His Original Theory.—The Evidence.—A
Sham Test.—Cowpox not Fully Described.—Implied Likeness to
Smallpox.—Called " Smallpox of the Cow."—No Reasons Given.—Facts
Suppressed.—James Phipps Tested.—Significance of Royal Society's Action. pp. 19-48.
CHAPTER 3. Jenner's "Inquiry."
The Horse-Grease Doctrine Appears.—The Paper Re-Written.—The Preface or Programme.—"Vague and Indeterminate Notions."— Cowpox as known to Fewster and others.—As known to Clayton the Veterinarian.—Evidence of Farmers.—"A few Solitary Instances." — Experiment is Better.—Cowpox due to Common Causes.—Jenner Denies Spontaneous Cowpox. — Invents "Spurious."—Misleading Likeness to Horse-Grease Sores.—Horse-Grease the Origin of Cow-pox and Smallpox.—John Baker Inoculated with the Grease.— Circumstances of his Death.—Inoculations with Cowpox itself.—To the Fourth Remove.—Jenner goes to London.—Inquiry Published.— Cline.—Jenner Omits the Test.—Summary of the Inquiry. pp- 49-77-
CHAPTER 4. THE RECEPTION OF THE "INQUIRY."
"Smallpox of the Cow" Accepted.—The New Name Defended.—Pearson's Objection.— Dr. John Sims and the Jacobs Case.— John Lawrence on "The Filth and Nastiness of Cowpox."—A Conscious View.—Dr. Ingen-housz.—Private Opinion of Beddoes.—Knight Offers to begin Vaccinating.—Jenner without Lymph.—Cowpox at Stonehouse.—Jenner's Experience with it.—Thornton's Experience with it.— Drake's Experience at Stroud.— Threatened Collapse.—Woodville to the Rescue .......pp 78-100.
CHAPTER 5. COWPOX MADE MILD AND ACCEPTABLE.
Woodville's Antecedents.—Pearson and Woodville.—Cowpox in Gray's Inn Lane.—A
Mild Type.—Source of the World's Vaccine.—Causes of Woodville's
Success.—Pedigree of his Stock.—Lymph from a Dairymaid's Hand.—Jenner Supplied
by Woodvitfe, but Seeks to Raise a Stock of his own.—The Public Mystified.V-Misleading
Effect of Woodville's Mild Type.—The Real Affinities of Cowpox.—Ricord's
Experiments to Inoculate Syphilis.—Henry Lee's Experiments and Plates.—The
Vaccine Vesicle in Ordinary.—The Vesicle of Horse-Grease.—Want of Dialectical
Scrutiny. 101-124.
CHAPTER 6.
THE VARIOLOUS TEST.
Experiment and Experience.—James Phipps Tested.—The Test Fails at
Stroud.—Woodville's Cases Tested.—Pearson's Tests.—Manchester Tests and their
Result.—Failures Reported to Jenner.—The Average Experience.—Variolation as a
Test and as an End in itself.—Old-fashioned Variolation.—The New Method of Gatti.—Found
out
to be a Sham.—Daniel Sutton and Dimsdale.—Bromfeild and Langton Protest against
Sham Inoculation.—What Woodville Desired.—The Sham Method General.—Jenner
Recommends the Test in its most Illusory Form.—An Astounding Forgetfulness in
the Profession at Large.—Other Fallacies of the Test.—Obstructed Lymphatic
Glands. —Sores on the Arm.—Interference of Eruptions, etc.
pp 125-154.
CHAPTER 7. THE FIRST APOLOGIES FOR FAILURE.
Jenner's Foresight.—Horse-Grease the only Genuine Source.—Discredited by
Events.—New Definitions of "Spurious."—Horse-Grease Dropped by Jenner. —Taken up
by Others.—Jenner's Origin of the Vaccine Inoculation a Retrospective Fable.—His
Early Difficulties.—An Editor's Short Memory.—Audacious Mendacity.—Argument of
the Further Observations Antedated.— "A Wide Field of Experiment."— Woodville's
Reticence.— Ingen-housz on "Spurious Smallpox."— Henry Jenner on Spurious
Cowpox.—Rev. T. D. Fosbroke Explains Spurious Cowpox.—Rev. G. C. Jenner on
Spurious Vaccine. —The Profession Demands Definition of" Spurious."—Dr. John
Stevenson. —Denman and Lord Derby.—Dunning States the Issue.—Double Use of the "Spurious" Cry.—Ulceration of the Vesicle.—The Clapham Cases.—Smallpox after
Vaccination is called Chicken-pox.—A Mystical Excuse.—Long Career of Apologetics
Begun pp. 155-182.
CHAPTER 8.
GENERAL ASSENT IN ENGLAND.
Quality of the First Vaccinists.— Criticism Silenced by Abuse.— The Leaders of
Opinion.—Scientific Assent.—The London Testimonial of July, 1800. —Jenner
Confirmed on Every Point. —Completely Established before Two Years.—Approval by
the Public.—Jenner Petitions Parliament for a Reward.—Admiral Berkeley's
Committee.—Monotonous Evidence of the Medical Leaders.—Jenner gives his "Concise History."—The Opposition Confined to Variolators.—The Variolous Test not
Exposed.—Decision of Parliament.—The Committee Composed of "Friends of the
Petitioner" pp. 183-203.
CHAPTER 9. THE GERMAN ENDORSEMENT.
Securus judicat orbis terrarum.—The Gottingen Academy of Sciences.— Osiander's
Book.—The Variolous Test at Hanover.—The Epidemic Test.—The Fiasco at Oebisfelde.
—Wardenburg's Doctrine of Spuriousness.—Bremen Experiences. —The Danish
Commission.—Berlin.— Hufeland's Enthusiasm.—Official Prussian Inquiry.—The King
Impartial.—Results of the Inquiry.—The Movement in Breslau.—Struve's Tests at
Gorlitz.—Sommerring's Tests at Frankfurt.—Satires upon Vaccinators.—The New Mode
Demanded by the Public.—Hessian Experience.—A Failure at Meissen.—Bavaria.—The
Innovation in Vienna.—Criticisms by the Salzburg Journal.—Formal Tests at
Vienna.—Vaccination Useful against Plague, Scarlet Fever, Dog-distemper, and
Sheep-pox ..... pp. 204-238.
CHAPTER 10. RECEPTION OF COWPOX IN FRANCE.
Petite verole des vaches.—Jenner too Deep for Verdier.—The Field Open in
France.—Comite Central de Vaccine.—Opposition by Vaume.— Analysis of Verdier's
Objections.—A Reply from Montpellier.— Validity of the Variolous Test not
Criticised. —Salmade's Mode of Inoculating Smallpox.—Eruption not Essential to
Success.—Heber-den's Law of Interference Disregarded.—Voisin's Tests at
Versailles. — Colon's Tests in Paris.—Grand Decisive Test by the Comite
Central.—Notorious Failure at Toux.—Excused by the Lyons Commission.—The Test
at Lyons.—The Amiens "Jury of Health" and Lord Cornwallis ....... pp.
239-266.
CHAPTER 11. THE JENNER OF ITALY.
Sacco's Antecedents.—Discovery of Cowpox at Varese.—Sacco's Ideal Plate of
Cowpox on the Teats.—The Varese Cowpox Spontaneous.— Sacco's
Pathology.—Experiments with Cowpox on many Species of Animals.—Cowpox against
Sheep-pox.—Dr. William Budd's Conclusion.—Men not like
Sheep.—Dr. Legni Uses Sheep-pox as Vaccine. —Sacco Adopts the Horse-Grease
Doctrine and Practice.—"Equine" in Vienna.—Sacco Hailed as the Jenner of
Lombardy.—Epidemics Stamped Out.—Formal Variolous Test at the Milan Orphanage.—
The Test at Florence.—Sacco's Oration in 1832.—Vaccinal Syphilis in
Italy.—Marshall in Palermo.—Monteverde's Statue of "Jenner Vaccinating his Child
". pp 267-290.
CHAPTER 12.
ASSENT TO A MYSTERY.
Dignified Associations of Vaccination.—Protection by Cowpox an Acknowledged
Mystery.—The Intellectual Difficulty soon Forgotten.—Newman on Assenting to a
Mystery.—Real and Notional Assent.—Scientific Ramifications Pursued with Exact
Diligence.—Popular Assent not to the Mystery, but to
each of its Component Propositions.—The Rude Intellect of the World at
Large.—Popular Assent to the Several Parts of Vaccine
Doctrine.—The Doctrine as a Whole a Subject for
Pathology.—Has Pathology done its Duty ?—The Doctrine
in Parliament, 1840.—Again in 1853: Lord Lyttelton.—The Blue-Book of 1857.—A
Smallpox which is not Smallpox, but Prevents
Smallpox.—"A Scientific Principle" Foreshadowed.—Enunciated by
M. Pasteur as the Methodical Attenuation of Virus.—Historical
Origins of Cowpox Forgotten.—" Vaccin" has become a Figure of
Speech pp291-309
CHAPTER 13.
ESTABLISHMENT AMIDST DISSENT.
Dr. Moseley, the First Anti-Vaccinist.—His Influence in London Society.
—Other Opponents.—Disillusion in 1804.—Goldson's Book.—Ring's, Reply.—Credit Shaken.—Jenner's Appeal to the Aristocracy.—The
College of Physicians called on to Judge.—Sir Lucas Pepys.—Second
Grant to Jenner.—Radical Malcontents.—The Vaccine Board.—The
Grosvenor Case.—S. T. Coleridge.—Belief Mainly Official.—Lord
Boringdon's First Bill.—Second Bill also Defeated : Speeches in the
House of Lords.—The Epidemic of 1817-18.—"Modified" Smallpox
pp310-335
CHAPTER 14. COMPULSION.
A Moment of Hesitation.—Corporation Interests in the Way.
—The Profession Tired of Jenner.—Return to the Old Inoculation.—Epidemic
of 1824-25.—Last Protests in the Medical Press.—Legislation of 1840.—Lord Lyttelton's Act.—The Epidemiological Society.—Doctrine of Nuisance to One's
Neighbour.—Doctrine of Omissional Infanticide.—The Principles of Sangrado.—Anti-Vaccinist
Scrutiny. —Evidence of Facts in the Epidemic of 1871-72.—No Surrender.—A
Question for the Public.
pp 336-354
JENNERIAN DOCTRINE OF VACCINE.
CHAPTER 1. Jenner's scientific credit before vaccination.
WHEN Dr. Edward Jenner came before the world to recommend cowpox as an effective
substitute for smallpox in the way of inoculation, he had been for nine years a
Fellow of the Royal Society, with a considerable intimacy among leading men in
London. When the evidence for his alleged discovery was challenged by Dr. Ingen-housz, a foreign physician and scientific writer of great repute, who
happened just then to be on a visit to Lord Lansdowne, at Bowood, Jenner
promptly stood upon his dignity as being himself a scientific personage not
unknown, and thus wrote to his foreign critic: "Truth, believe me, sir, in this
and every other physiological investigation which has occupied my attention, has
ever been the object which I have endeavoured to hold in view."1
What, then, were these earlier physiological inquiries to which Jenner appealed? and what were the grounds of his being taken
seriously, as unquestionably he was taken seriously, by leading men in medicine
and science whenever his first essay on cowpox issued from the press ?
1 Baron's Life of Edward Jenner, M.D. 2 vols. London, 1827-1838, i.
294.
Jenner came of a prosperous family in the Church, who held benefices in
succession, as well as a small landed estate in the Berkeley country of
Gloucestershire. When he had finished his apprenticeship with an able country
surgeon, Mr. Ludlow, of Sodbury, whose son and partner had been a pupil of John
Hunter's, in London, Jenner was sent, at the cost of his elder brother, to
become in like manner a boarder and pupil in John Hunter's house. Hunter's fee
for each pupil was five hundred guineas, the pupil being bound for five years ;1
but as Jenner had already completed his indentures with Ludlow, he remained only
two years with Hunter, and was probably received at an annual rate for so long
as he cared to stay. In Hunter's house and workrooms, he was in a centre of
great influence and of many opportunities. Among his youthful contemporaries
were Everard Home, Cline, and others, who had become men of influence by the
time that Jenner came forward as the advocate of cowpox six-and-twenty years
after. Shortly after he went to board with Hunter, Banks came home in 1771 with
a large collection of objects which he had made, with the help of Solander, as
naturalist on Captain Cook's first expedition to observe the transit of Venus in
the South Seas, and Jenner was set to work upon the specimens. There is nothing in his own
1 Ottley's Life of J. Hunter, p. 34.
JENNER AND BANKS.
writings, or in any of his observations that Hunter made use of, to show that he
ever acquired any technical skill in dissecting and preparing. The set of
injected specimens, showing the stages in the development of the hen's egg,
which he bequeathed to his executor, Dr. Baron, was probably one of the
purchases which Hunter made for him at the sale of Hewson's fine preparations,1
although Baron assumes without evidence that they were Jenner's own handiwork,
and praises him, accordingly, for his anatomical skill. But there were other
humble ways in which an apprentice of Hunter's could be useful to Banks; and,
at all events, Jenner made the acquaintance of the man who was destined to
occupy the chair of the Royal Society for many years, and to be the Maecenas of
science. It is at this point that the Jennerian mythus begins in the pages of
the biographer, Baron. Jenner, we are told, was offered the post of naturalist
with Cook's second, or 1772, expedition to the Pacific. The facts are as follows
: Banks failed to induce the Government to allow himself, and the assistants
whom he had selected, to accompany the second expedition in 1772, although he
had been so far led to expect their consent as to have his appliances all ready
and a scientific staff chosen. In order that his preparations should not be
altogether in vain, and his assistants unemployed, he himself fitted out a
naturalists' expedition to Iceland ; but Jenner was not one of those who sailed
with it. Jenner remained a few months longer with Hunter, and returned in the
end of 1772 to Berkeley, where he commenced practice in the house of his brother, the Rev. Stephen Jenner.
1 Hunter to Jenner, 30th Aug., 25th Sept., and 9th Nov., 1778, in Ottley's
Life
of J. Hunter, pp. 70, 71.
4
SCIENTIFIC CREDIT BEFORE VACCINATION.
From the time of his return to Gloucestershire down almost to the death of
Hunter in 1793, Jenner kept up a correspondence with the latter. Hunter's
letters to Jenner have been preserved, and they are, indeed, almost the only
letters of his that were available for printing in his biography. They are a
conspicuous feature of Drewry Ottley's Life of John
Hunter1 and of the earlier
chapters of Baron's Life of Edward Jenner. There can be no question that Hunter
had an unaffected liking for his old boarder, who was not only attractive to him
by his imaginative qualities, but was also good-natured, although very dilatory,
in getting him specimens.
"I don't know any one," Hunter tells him in 1776, "I would as soon write to as
you. I don't know anybody I am so much obliged to." Again, on 18th January,
1776: "I have but one order to send you, which is, to send everything you can
get, either animal, vegetable, or mineral;" and, on 17th December, 1777: "I am
always plaguing you with letters, but you are the only man I can apply to,"—that
is to say, for country specimens and observations.
After Jenner had been in practice two years (1775), Hunter made him an offer,
which had been already declined by several. Hunter had a scheme for starting a
school of anatomy and natural history in London, to a share of which venture he
was willing to admit some one, with the rank of assistant, on receiving a
premium of one thousand guineas down.
1 London, 1835.
JENNER AND HUNTER. 5
Jenner was asked to consider whether he was prepared to come to London and to find one thousand guineas. " I proposed it to L-----[probably young Ludlow] before he left London," says Hunter, " but his father objected, I believe, to the money." Jenner naturally objected to the money too, and on his declining the offer, Hunter replied that he had hardly expected it would suit Jenner.
Of the various naturalist inquiries which Hunter set his country correspondent to work upon, only two came to anything. One of these formed the subject of Jenner's own paper in the Philosophical Transactions, some fourteen years after, on the "Natural History of the Cuckoo"; another yielded a few meagre observations on the temperature of hedgehogs in their torpid and waking states respectively. There were also some fragmentary conclusions about the action of blood and other organic manures upon growing plants, in a letter to Banks. These, then, were his earlier achievements, which Jenner referred to when he wrote to Ingen-housz in 1798: " Truth, believe me, sir, in this and every other investigation which has occupied my attention," etc.
A great part of Hunter's correspondence with him relates to the hibernation
of the hedgehog. Hunter's long memoir on the "Heat of Animals," etc., was read
before the Royal Society in two parts, on June 19th and November 13th, 1777 ;
for that research he had been collecting facts during several years, and had
enlisted Jenner in the service, especially with reference to the temperature of
the hedgehog and other winter-sleepers in their torpid state. On August 2nd,
1775, he writes to Jenner: " I thank you for your experiment on the
6 SCIENTIFIC CREDIT BEFORE VACCINATION.
hedgehog ; but why do you ask me a question by the way of solving it? I think
your solution is just, but why think ? why not try the experiment ?"1 He then
directs him to repeat all the experiments (as planned in detail by Hunter), and
they will give him the solution. On 10th January, 1776, Hunter again writes:
"Have you large trees of different kinds that you can make free with ? If you
have, I will put you upon a set of experiments with regard to the heat of
vegetables. Have you any eaves where bats go at night ? If you have, I will put
you upon a set of experiments concerning the heat of them at different seasons?
"On January 22nd : "You do not mention a word about bats " ; and a few weeks
later : "If you catch any bats, let me have some of them ; and those you try
yourself, open a hole in the belly, just large enough to admit the ball [of a
thermometer] and observe the heat there," etc. In May, 1777, he sent Jenner a
thermometer which he had got made specially for the purpose, and on the 6th of
July wrote to him again with minute directions for using the ivory sliding scale
attached to it.
But not even in the second part of Hunter's memoir on Animal Heat, which was
read on 13th November, 1777, are the observations forthcoming on the hedgehog
and bat, which he wanted Jenner to make for comparison with his own observations
on the dormouse. On the 23rd November he writes to say that the hedgehogs sent
by Jenner had arrived, and to ask him to go on observing these hibernators in
the country. On December 17th 'This is all the
warrant that Baron had in saying that Hunter used to advise his pupil, " Don't
think, but try."
7 DILATORY OBSERVATIONS ON HIBERNATION.
he writes to say that the hedgehogs sent had died: "therefore I want you to find
out their haunts, and observe, if you can, what they do," giving him full
directions how to proceed. On 29th March, 1778 : "Have you made any
experiments with the hedgehogs, and can you send me some this spring ? for all
those sent me died, so that I am hedgehogless."
In any circumstances it would have been no easy thing to carry out Hunter's directions for taking the temperature of a torpid hedgehog by making an incision in its body when it was coiled up into a ball ; and Jenner was at that time in no mood for nice researches. Having written to tell Hunter of the disappointment in love which had just befallen him, he got answer on 25th September, 1778: "Let her go, never mind her. I shall employ you with hedgehogs." He then puts before him a number of points to be observed in the problem of winter-sleep, including the autumnal storing of fat, and the consumption of it during the winter, none of which does Jenner appear ever to have fully apprehended or at all events given heed to. The references to hedgehogs go on, in the same tenor, in the letters for several years following. In 1783 Jenner wrote for a thermometer, whereupon Hunter replied: "You are very sly, although you think I cannot see it ; you very modestly ask for a thermometer. I will send one, but take care those d-----d clumsy fingers do not break it also."
The sole outcome of all this dunning year after year was the brief record of four temperature observations made by Jenner on a hedgehog (two in winter, one in summer, and one at a season not stated), which Hunter
8
SCIENTIFIC CREDIT BEFORE VACCINATION.
introduced in half a dozen lines into his paper on the Animal Heat when he
reprinted it in 1786, nine years after it was read to the Royal Society, in his
" Observations on Certain Parts of the Animal Economy." As late as 10th
December, 1791, Hunter writes to Jenner : "Now that hedgehogs are gone to
sleep, I could wish you would get some of them for me," and send them to London.
Baron says that he found among Jenner's papers "a manuscript detailing many of
the experiments which he had made at the instigation of Mr. Hunter on hedgehogs
; but I deem it expedient to delay its publication till it is found convenient
to collect and print all his medical and philosophical papers." The collection
referred to was never published. Hunter in 1786 gave the four
temperature-observations that Jenner had made for him ; and, if there had been
any others worth recording, it is tolerably certain that Hunter would have put
them in to eke out his meagre data.
Jenner's "medical papers," previous to those on cow-pox, were one on a mode of preparing tartar emetic, and an observation of calcified coronary arteries of the heart in a case of angina pectoris, which was used by Dr. Parry, of Bath. His "philosophical papers " are represented solely by the observations on the cuckoo, in the Philosophical Transactions for 1788. The instructive history of that piece will now be given, with the view of throwing some light on Jenner's habits of thought and of work before we come to his more famous labours on cowpox.
A farm near Berkeley belonging to Jenner's aunt Hooper was a favourite haunt of cuckoos, and Jenner as a boy was familiar, like other boys of the locality, with
9 THE PROBLEM OF THE CUCKOO.
the bird and its ways. The fact that it laid its eggs in the nests of
hedge-sparrows and some other birds had been admitted by every one for
centuries, having been noted as a piece of common knowledge by Aristotle. It was
reserved for the Philosophical Transactions, or for the Hon. Daines Barrington
writing therein, to call in question this familiar observation, which men and
boys had made ever since European cuckoos had been observed by men and boys at
all.
John Hunter, having no doubt that the common experience of mankind was to be
trusted in that matter, proceeded to ask himself why the cuckoo should lay its
eggs in the nests of other birds; and he endeavoured to find an answer by his
favourite method of examining the internal economy, and its adaptation to the
animal's habits.
Previous to 1771, or before Jenner, aged twenty-one, came to board with him,
Hunter was known to have dissected hen cuckoos,1 and had satisfied himself that
there was nothing in the anatomical disposition of the viscera, as some before
him had alleged, to prevent the bird from sitting on eggs like any other bird.
This conclusion was one of those which Jenner introduced as a novelty into his paper of 1788, along with an analogical argument identical with that which White of Selborne had developed from observations on the structure of the closely allied fern-owl in a letter to Barrington in 1776. But the biographer, Baron, mythological as usual, will have it that "all naturalists previous to Jenner were inclined to ascribe the peculiarity in the
1 See Daines Barrington, Phil. Trans., vol. 62 (1771).
10 SCIENTIFIC CREDIT BEFORE VACCINATION.
economy of the cuckoo to causes of this kind," namely its structural
disabilities, the truth being that Herissant's conjecture was discredited
already. There were many other points in the cuckoo's problem needing
elucidation, as Hunter well knew; and when Jenner left Hunter's roof to return
to Berkeley, he would undoubtedly be in possession of the great anatomist's
views and wishes on the subject. In one of his earliest letters, written a few
months after Jenner's return to the country, he thanks the latter for sending a
cuckoo's stomach ; in another, of the same period, he writes : "I shall be glad
of your observations on the cuckoo ; be as particular as you possibly can."
Hunter was by no means disposed to deprive his correspondent of any advantage or
credit that might accrue from his studies in natural history. At an early period
of their correspondence he had written to him : "If in any of these pursuits
you discover any principle worthy of the public, I will give it to the Royal
Society for you."1 However, Jenner's study of the cuckoo did not for years look
as if it would amount to anything, any more than the observations on the
hedgehog ever did. In 1783, or ten years from the date of his first cuckoo
reference, we find Hunter still writing : "I should be glad to have a true and
particular account of the cuckoo, as far as possible under your own eye"; and,
in the same year: "I request the whole history of cuckoos this summer from
you." Three years more passed ; and at length, in 1786, Jenner drew up for the
Royal Society his paper on the Natural History of the Cuckoo, in the
1 Ottley's Life of Hunter, Letter of 1776, p. 60.
11 A DISCOVERY AT THE LAST MOMENT.
form of a letter to Hunter. It was sent to the latter, who kept it beside him
for several months before giving it to the Royal Society, as that body was so
torn with inward dissensions that the moment was not favourable.1 In May or
June, 1787, the paper came before the Council, and was ordered for publication
in the Philosophical Transactions.2
But Jenner had found reason to change his mind at the last moment on the most
important part of this problem, which he had been at work upon for some fifteen
years. He wrote to have his paper returned ; and Banks, the president of the
Royal Society, acceded to his request as follows, under date 7th July, 1787 3 :—
" In consequence of your having discovered that the young cuckoo, and not the
parent bird, removes the eggs and young from the nest in which it is deposited,
the Council thought it best to give you a full scope for altering it as you
shall choose. Another year we shall be glad to receive it again, and print it."
Having at length got the Prince of Denmark into the play, Jenner sent it up,
dated 27th December, 1787; it was read before the Royal Society on 13th March,
1788, and published in the Transactions for that year. On the strength of this
achievement, Jenner wrote to Hunter suggesting that he should be proposed for
election into the Royal Society ; to which Hunter replied that Sir Joseph Banks,
on being spoken to, " had not the least objection, and will give all his
assistance, but
1 Hunter to Jenner, 26th April, 1787, Ibid. p. 104.
2 Jenner to Banks, in Baron, i. 77.
3 In Baron, i. 77.
12 SCIENTIFIC CREDIT BEFORE VACCINATION.
he thinks the paper had better be first printed and delivered, and let the people rest a little upon it, for he says there are many who can hardly believe it wholly." 1 It was accordingly in the February following (1789) that Jenner was balloted for and elected F.R.S.
The paper on the cuckoo, in its original form, contained a number of observations on the contents of the stomach in the young bird, on the small relative size of the cuckoo's egg (which was apparently not known at the time to Gilbert White), on the fierce behaviour of the young cuckoo when inspected in its nest, on the number of eggs or traces of eggs in the cuckoo's oviduct, and on the hedge-sparrow's or other foster-parent's habit of ejecting its own eggs from the nest after the cuckoo's had been deposited therein. Besides these observations, and one or two rather crudely devised experiments, the original paper had contained a speculation on the causes of the cuckoo not hatching and rearing its own young.
The basis of that theory was the observation on the number of eggs in the cuckoo's ovary in various stages of forwardness. Gilbert White, in his letters to Barrington, had already questioned the statement that the cuckoo lays only one egg, and proposed to examine the ovarium so as to settle the matter. That was what Jenner did. He found it like a hen's ovary, with eggs in all stages, and he concluded, as White said he would do if the fact were so, that the cuckoo laid "a great
1 The following judicious puff was inserted among the leading paragraphs of
the World newspaper for 8th April, 1788: "The Natural History of the Cuckoo,
lately read to the [Royal] Society, is one of the happiest additions to this
part of animated nature."
13 THE CUCKOO'S INSTINCT.
number of eggs" in each year. Jenner's notion was that the cuckoo had " a
call of nature to produce a numerous progeny"; and was also "compelled," for
some reason not stated, to leave us early, being only "allowed " a short
residence, and "instinctively directed " to migrate in July. It could only
reconcile those two calls of nature by laying eggs up to the end of its stay and
leaving them to be hatched by other birds.
The point that later theorists have dwelt upon is the (assumed) long interval
between each of the cuckoo's eggs; it is that, and not the mere number of the
eggs, which would "make the process of laying and hatching inconveniently long,"
as Darwin says [Origin of Species, 6th ed., p. 212), and would create also the
inconvenience of eggs and young birds of different ages in the same nest. To
entrust each egg, as it was laid, to the care of some other bird then sitting
(and, as Gilbert White pointed out, another bird wisely chosen) would thus be a
true maternal instinct, or an action done for the sake of the young brood
severally and collectively. But the cuckoo's early migration can hardly be part
of the cause ; it is rather a correlated effect. The cuckoo leaves us early
because its parental instincts or duties, as it construes them, do not serve to
detain it. The young cuckoos do themselves remain until comparatively late in
the year (September), or until they are strong enough to undertake their flight.
What cuckoos of the first year could do, the same birds in their second and
subsequent years could surely do also.
The after-thought which caused Jenner to ask for his paper to be returned to
him formed that part of the communication, as published in the Philosophical
Trans-
14 SCIENTIFIC CREDIT BEFORE VACCINATION.
actions, which Banks must have had in his mind when he told Hunter that "there
are many who can hardly believe it wholly." It is a highly coloured description
of a young cuckoo, hatched since the day before, as seen in the act of ejecting
its fellow-nestling, a young hedge-sparrow of its own age and size. Jenner's
original view, based on observations and abundantly confirmed, was that the old
hedge-sparrow turned out her own eggs from the nest after the cuckoo's was laid
beside them, on the principle, perhaps, of cutting off its nose to spite its
face ; and that the old cuckoo somehow came and turned out the hedge-sparrow's
brood after they were hatched. Such, at least, is the view that Banks professes
to have read in the first edition of the paper ; and that is a view which Jenner
himself speaks of, in the second edition of it, as being erroneously held by
some authors, although he does not say that he himself had held it until quite
recently. The common-sense view, which he also refers to, was the one given some
years before by Pennant in his British Zoology1 to the effect that the young
cuckoo, growing much faster than the companion fledglings which started level
with it, and soon requiring all the room, destroyed the young hedge-sparrows by
overlaying them. (Their ejectment after that would be a matter of course, and
would naturally be done by the old bird.)
But on the 19th of June, 1787, Jenner saw a marvellous thing happen. The day
before, a hedge-sparrow's nest had contained one cuckoo's egg and three of the
bird's own eggs. Next day, the nest contained
1 Fourth Edition, 1776, i. 201.
the newly hatched cuckoo (from an egg the size of a lark's) and one newly hatched hedge-sparrow, the two remaining eggs having disappeared. "The nest was placed so near the extremity of a hedge that I could distinctly see what was going forward, and saw the young cuckoo [less than a day out of the shell] in the act of turning out the young hedge-sparrow. The little animal, with the assistance of its rump and wings, contrived to get the bird upon its back, and clambered backward with it up the side of the nest, till it reached the top, where, resting for a moment, it threw off its load with a jerk, and quite disengaged it from the nest. It remained in this situation a short time, feeling about with the extremities of its wings as if to be convinced whether the business was properly executed, and then dropped into the nest again. With these (the extremities of its wings) I have often [how often ?] seen it examine, as it were, an egg and nestling before it began its operations ; and the nice sensibility which these parts appeared to possess seemed sufficiently to compensate the want of sight, which as yet it was destitute of"—being, in fact, a raw young thing hardly bigger than the small egg which held it the day before. He afterwards tried the experiment of putting in an egg beside this heartless young creature, when, "by a similar process, it was conveyed to the edge of the nest, and thrown out." These experiments he had since repeated several times in different nests, and always found the young cuckoo "disposed to act in the same manner." The "often" in a former sentence, and the "several times in different nests " in the last sentence, must not be taken too literally, inasmuch as this whole be
16 SCIENTIFIC CREDIT BEFORE VACCINATION.
haviour of the young cuckoo was, on his own admission, new to him on the 19th of June, 1787, by which time the hatching season was about over for that year, and his paper was sent in and printed before another season.
But these were not the only marvels introduced into the paper on second
thoughts. The young cuckoo's back, it seems, is specially designed for the
lodgment and ejectment of eggs and young birds ; "for, different from other
newly hatched birds, its back from the scapulae downwards is very broad, with a
considerable depression in the middle. This depression seems formed by nature
for the design of giving a more secure lodgment to the egg of the hedge-sparrow,
or its young one, when the young cuckoo is employed in removing either of them
from the nest. When it is about twelve days old, this cavity is quite filled up,
and then the back assumes the shape of nestling birds in general." This unique
and marvellous structural change, it need hardly be said, has no existence ; nor
did Jenner seek to establish his assertion in the only way by which it could be
established, namely, by a series of dissections. Moreover, he himself
inadvertently supplies the key to the illusion and the fanciful anatomy by his
remark on the previous page of his wondrous tale of ejectment, that the young
cuckoo "makes a lodgment for the burden by elevating its elbows."
Not only does the peculiar structural depression disappear from its back
after the twelfth day; also "the disposition for turning out its companions
begins to decline from the time it is two or three till it is about twelve days
old, when, as far as I have seen, it ceases. Indeed, the disposition for
throwing out the egg appears
17 ACCEPTED BY ORNITHOLOGISTS.
to cease a few days sooner ; for I have frequently seen," etc.
All this varied, rich, and marvellous experience of the behaviour of young
cuckoos has to be crowded into a few days at the end of the breeding season of
1787, having eluded the observer's notice during all the years since 1773, when
he first wrote to Hunter about his "observations on the cuckoo." Hunter's
advice to him on that occasion was, "Be as particular as you possibly can";
and never was the advice more needed.
Jenner's graphic description of the newly hatched cuckoo clambering up the
side of the nest with a young hedge-sparrow as big as itself in a specially
designed hollow of its back, balancing itself on the edge of the nest, then
throwing its burden over the precipice with an adroit jerk, and remaining there
a short time to make sure that the catastrophe was complete, has been accepted
by all ornithologists.1 Pennant, who had originally given the sensible
explanation that the young cuckoo "quickly destroys the genuine offspring by
overlaying them, as its growth is soon so superior," altered the passage in his
edition next following Jenner's paper to "quickly destroys them by ejecting
them from the nest." Jenner's cuckoo paper contains a few credible and prosaic
facts ; but the greater part of it, and all that part of it which is best
remembered, is a tissue of inconsistencies and absurdities.
This, then, was the piece of scientific work which got
1 Darwin (Origin of Species, etc., 6th ed., p. 214) says that Gould had "received a trustworthy account of a young cuckoo,'' etc., but he does not quote Jenner, the sole authority for the "strange and odious instinct."
18 SCIENTIFIC CREDIT BEFORE VACCINATION.
Jenner elected into the Royal Society ; and this was chiefly what he had in
mind when he wrote to Ingen-housz at the outset of the cowpox controversy : "
Truth, believe me, sir, in this and every other physiological investigation
which has occupied my attention, has ever been the object which I have
endeavoured to hold in view."
CHAPTER 2.
THE POX, THE SMALLPOX, AND THE COWPOX.
WHEN Jenner came up to London in 1788 or 1789 in connexion either with the reading of his cuckoo paper before the Royal Society, or with his election into that body, he brought with him a drawing of a peculiar affection on the hand of a dairymaid ; namely, a large bluish-white bleb about the size of a silver threepenny piece. The drawing was shown to the various old friends whom he met in town, including Banks, Home, and Hunter ; a rough sketch of the tumid bleb of a cow-pox sore exists among the Hunterian drawings on the envelope of a letter from Jenner without date.1 It was a pathological curiosity in London, but a tolerably familiar thing in the dairy farms of Dorset, Wiltshire, Gloucestershire, Norfolk, and other counties. Some of Jenner's professional neighbours knew a good deal about it, particularly Mr. Fewster, of Thornbury. Jenner himself at that time knew hardly anything more about it than he might have heard now and then ; and, in truth, the milkers' sores were more likely to be treated, if treated at all, by a cow-leech than by a surgeon. But Jenner's fancy had been arrested by some idle talk that
1 Ottley's Life of John Hunter, p. 39.
20 THE POX, THE SMALLPOX, AND THE COWPOX.
he had heard of cowpoxed milkers being unable to take smallpox ; he thought he saw before him the materials for another Royal Society paper, and he kept cowpox in mind in the lazy and unmethodical way that was natural to him.
The cowpox had been so called as far back as the oldest inhabitant could remember, Jenner himself says " from time immemorial." 1 It had not occurred to any one to associate it in any way with the smallpox until rather late in the eighteenth century ; and those who did connect the two would appear to have been rather the idle gossips than those country people who had some real practical knowledge of either or both diseases. The single bond connecting cowpox with smallpox was the occurrence of the word "pox" in each name ; it was a case of the river in Macedon and the river in Monmouth. The jingle of the names had the effect that it often has upon credulous people, whose acquaintance with any matter is more verbal than real. Those who had been unlucky enough to catch the cowpox on their fingers from milking cows with sore teats had an instinctive notion why the affection had been called a pox ; but the officious gossips who knew no more than
1 The Origin of the Vaccine Inoculation, 1801. In the
Inquiry he says that
the oldest farmers knew it by the name of cowpox as far back as they could
remember, but it had not occurred to them to connect it with smallpox. Jenner's
Inquiry, although it counts among the sacred books of the profession, is not
much read now, even by the officials whose business is with these matters. Thus,
a former Superintendent of Statistics for Scotland (Dr. Stark), in his report
for 1870, p. 32, deplores the ignorance of the public about vaccination, and
begins a homily to them with the remark that it was Jenner who first called the
infection " cowpox."
THE COWPOX LEGEND LOCALISED. 21
the name of the thing must needs make a fine romantic legend out of it. You have
had the cowpox, they said to the milkers ; therefore you cannot take the
smallpox. It is a mistake to suppose that this now famous legend had been a slow
growth, with its roots deep down in experience. It was by no means universal in
the grazing districts of England where cowpox was found ; Mr. Jacobs, a
prominent Bristol solicitor about Jenner's time, came forward to testify that he
had twice suffered from cowpox sores when he was a lad working upon his father's
farm some forty years before, but he had never heard it said that the cowpox
kept away the smallpox.1 Dorsetshire is known to have been one indigenous
source of the cowpox-smallpox legend about the year 1774 or earlier ; but it is
not impossible, and, if we may trust the evidence collected by Pearson (Nov.,
1798), it is probable, that a corresponding legend may have sprung up
independently, and through the operation of the same legend-making causes, in
other English dairy-farming districts. Those who professed to have discovered
the same country legend in remote parts of Europe, such as Holstein and Provence,
after Jenner's writings had become universally talked about, do not seem to have
allowed for the possibility of its having been a mere after-thought on the part
of their not very discriminating informants.2 In several of these foreign
1 Contributions to Physical and Medical Knowledge, edited by
Beddoes. Bristol, 1799, p. 420.
2 For an account of the Holstein cowpox and the legend, see the
summary of essay by Hellway, in Hufeland's Bibliothek der practischen
Heilkunde, 1801. Hellway was the author who first in
22 THE POX, THE SMALLPOX, AND THE COWPOX.
versions, it is sheep-pox that figures prominently, a disease of the cattle being but vaguely hinted at.1 One German of credit, Dr. Heim, of Berlin, who performed the first vaccinations in that capital, distinctly tells us that he had in his youth heard from his father of milkmaids catching sores on their hands from the cows' teats, but there had been no mention of protection against smallpox.2 In France they had no name for cowpox at all, and therefore no basis for the legend. The stories about deliberate cowpoxing in Beloochistan and the Peruvian Andes are hardly to be taken seriously as evidence of the world-wide prevalence of a legend depending upon the jingle of words, which Jenner dragged from obscurity in the western counties. Even in the eastern counties, where the affection was called pappox, the legend of protection from smallpox was not indigenous before Jenner.
The origin of the legend is not difficult to account for. The notion of warding off, antagonizing, or charming away disease is old enough, and has pervaded the medical beliefs of the learned as well as of the vulgar. The special fitness of the charm or antidote depended usually upon some verbal jingle. The old herb-books are full of fanciful nonsense of the kind. Thus it afforded protection from a mad dog to carry the herb
vented the four spurious varieties ("yellow pox," "black pox," " white pox,"
etc.).
1 It was so in the disease near Montpellier in 1781, vaguely reported by Rabaut,
a Protestant pastor, and claimed long after, in 1821, by Husson
(Dict, des Sc.
Med., art. "Vaccination") as the true source of Jenner's cowpox ideas.
3 Hufeland's Journal, vol. x. pt. 2, p. 187.
A JINGLE OF WORDS. 23
hound's-tongue in a packet tied to the wrist; and the root of the dog-rose was
an antidote to the dog's bite.1 The supposed antagonism of cowpox to smallpox
was a verbal jingle of that kind ; it was founded on the similarity of names,
and not on any alleged likeness between the two diseases. Certainly for those
who knew by inspection what the pox of the cows' teats was, and most of all for
those who had suffered the painful and often obdurate ulcers on their own hands,
there would be no suggestion of real likeness to smallpox, or of the one disease
being in any way related to the other. It was the jingle of the names that
brought the two together in the first instance.
The next step in the growth of the legend was also made on the part of the illiterate country people. After the middle of last century most persons in England knew the object of being "cut for the smallpox"; it was thought better to be cut for the smallpox at one's own convenience than to run the risk of catching the disease when it was epidemic. In the year 17742 it occurred to Benjamin Jesty, a Dorsetshire dairy-farmer in good circumstances, that it would serve as well to be cut for the cowpox ; and accordingly he himself did actually cut his wife and two children for that disease ; that is to say, he inserted the matter of it from a cow's sore teats into their arms by incisions. What followed
1 Gaidoz, La Rage et St. Hubert. Paris, 1887. Chapter i. § 2.
2 This date is assigned to Jesty's experiment in the record of the
fact on his tombstone in the churchyard of Worth Matravers.
Jesty was made a good deal of by the vaccinists who separated
from Jenner in 1801-2, and had his portrait painted for the Vaccine
Pock Institution. He died in 1816.
24 THE POX, THE SMALLPOX, AND THE COWPOX.
is not precisely known, except that the doctor had to be called in ; but it does
not appear that Jesty's odd freak found any imitators. However, when so much was
being heard on every hand about preventing the smallpox by inoculation of mild
varieties of itself, such as the absurdly named swinepox, the fancy about cowpox
was pretty sure to be mentioned here or there. It was in some such casual way
that Jenner first happened to learn of the existence of the legend. For some
years he contented himself with sounding his professional colleagues about it,
introducing the topic now and then at their convivial meetings at country inns.
The man who knew most about cowpox sores in milkers was Fewster, of Thornbury ;
and Fewster, as well as others, had unfortunately good reason to scout the
milker's protection from smallpox as an old wife's fable. Whenever Jenner
proceeded to air his fancy, he was met with instance after instance in which a
cowpoxed milker had been attacked by smallpox like the rest.1 It was clear that
the legend as it stood would not work.
We have all heard how Jenner rose superior to difficulties, and how he
resolved not to be baffled ; but few persons know what the difficulties were,
and how he set about circumventing them. The way was barred by the hard facts of
experience, which country doctors, who knew far more of cowpox than Jenner did,
recognised in the way that sensible men always do recognise hard facts. Jenner,
however, thought that he saw an opportunity of repeating the success of his
cuckoo paper at the Royal Society. As may be seen from his preface,
1 See Baron i. pp. 48, 49.
VERBAL KNOWLEDGE AND REAL. 2 5
the task that he assigned to himself was to reduce a piece of rustic lore to
scientific precision. It is highly improbable that he would have ever undertaken
the subject, or persevered with it, if he had been as familiar with the nature
of the cowpox, whether in cows or in milkers, as some of his medical and
veterinary neighbours were. But his knowledge of the affection does not appear
to have been more than an acquaintance with the name and the common talk, and
with the superficial character of the milkers' sores. One can readily understand
Jesty, the Dorset farmer, being misled by the similarity of names, and by
superficial aspects of diseased processes. If we are to acquit Jenner of a much
graver charge, we shall have to assume that he had no deeper insight into the
real nature of cowpox, or the real significance of the name which it had borne
for generations, than had Jesty himself. Jenner was, indeed, just the
loose-thinking, imaginative sort of person to deal with the matter in a merely
verbal way. While his prosaic medical neighbours saw no point of contact between
cowpox and smallpox, and while they gave due heed to the abundant experience
that cowpoxed milkers had not escaped the common epidemic of the time, Jenner
persuaded himself that the one kind of pox was somehow related to the other,
that there was a scientific or pathological basis for the rumoured antagonism
between them, and that the cases of smallpox in previously cowpoxed milkers must
have been exceptions which he would one day be able to account for.
Meanwhile let us see why cowpox had been so called
26 THE POX, THE SMALLPOX, AND THE COWPOX.
by the common people long before Jenner's time, and also why the variolous
epidemic which had come across Europe from the East had been named smallpox. We
can at the present day deal with these pathological and philological questions
more easily than Jenner's contemporaries could ; but we can hardly have a
stronger or better founded conviction than they had that, whatever the
similarity of names depended on, the diseases themselves were totally unlike.
It was just because Jenner had no profound sense of these empirical realities
that he went blundering into visionary nonsense in the first instance, and at
length into systematic mystification and chicane.
The first known occurrence of the name "small pockes" in English writings is in
Holinshed's Chronicle (1577), under the year 1366, where it is applied to an
epidemic called pestilentia and lues by Polydore Virgil. An epidemic of
pestis
in England in the latter part of the reign of Edward III. meant, in all
probability, pestis in its technical sense of the plague. It seems to have been
a verbal blunder of Holinshed to translate it smallpox ; at all events, he gives
no reason for departing from usage. But Holinshed's use of the word, although
made in error, is evidence that smallpox was known by name in English speech in
the Elizabethan period. It is not improbable, indeed, that the word was known
in England before the thing itself became at all familiar ; it may very well
have been a direct importation into the language of the French petite verole1
which is the only other European name of the
1 Moore, in his History of the Smallpox (London, 1815, p. 81),
ORIGIN OF THE NAME "SMALLPOX."
27
disease constructed on the same lines. There is every reason to think that
France had an earlier experience of smallpox epidemics than England had ; there
were epidemics of it in Paris in 1536 and 1568, and over France generally in
1577 and 1586;1 and, if we are to be guided by facts as chronicled, and not by
vague prepossessions as to the ancient and universal prevalence of smallpox,
these were the first epidemics of the disease in France. For the same period
there is absolutely no record of the disease being epidemic in England, although
it is probable from Holinshed's curious mistranslation of the pestis of two
hundred years before as " small pockes," that the disease was being spoken of in
England in 1577, which was the very year of a great epidemic all over France,
and that the name in England was a direct adoption of petite verole.
There may, of course, have been cases of smallpox in England at an earlier
period, although that is hardly to be inferred from the mere use of the word
variola by mediaeval English compilers on medicine ; the compilers all copied
from each other or from some common Galenic-Arabistic source, their dealing with
diseases being purely verbal, so much so that a confused observer and empiric
practitioner like John Ardern stands out as a brilliant figure because he
describes from nature. It is known, however, that smallpox cases did occur in
London in the first years of the 17th
says that petite was prefixed to verole in France "about the 15 th century."
But it appears to have been only in the last years of that century that verole
itself came into use. See also Littre, Dict, de la
langue Francaise, art. "Verole."
1 Bohn, Handbuch der Vaccination. Leipzig, 1875, p. 7.
28 THE POX, THE SMALLPOX, AND THE COWPOX.
century, although probably not in great numbers. The London bills of mortality
were published by Captain John Graunt1 from 1629 onwards; there is no authentic
record for earlier years, but even in that year, and for several years after,
the deaths from smallpox are a mere trifle, except during the not very severe
epidemic outbursts which came at intervals. It is not until 1667 that the total
of deaths from smallpox in London becomes a large one every year.2 That was the
smallpox period which Sydenham lived through, and it seems reasonable to
conclude that he was the first English writer on smallpox chiefly because he was
the first who saw the disease on the great scale.
But the French had their verole before they had their
petite verole, and the
English had their pox before they had their smallpox. The sequence is made clear
not only by the philology but also by the history. Syphilis, or the pox, overran
all Europe as a strange and unfamiliar epidemic in the years 1494 to 1498, and
continued with almost unabated virulence until about 1520. The names of the
strange malady fluctuated for a time, and were various. In a proclamation of
James IV. of Scotland, 22nd September, 1497, with reference to isolating the
infected in Edinburgh to the island of Inch Keith, the disease is spoken of by
the French name of Grandgor, "and the greit uther Skayth."3
1 Natural and Political Observations upon the Bills of Mortality,
3rd ed. London, 1665.
2 See the Tables compiled by Guy, Journ. Statist. Soc. London,
1882, p. 430.
3 From records of Town Council of Edinburgh, in Phil. Trans.
xlii, p. 420.
ORIGIN OF THE NAME "POX." 29
But in France the name was soon fixed as verole, and in England as pox. Thus in
a petition of Simon Fish to Henry VIII., in 1530, against Romish priests, "the Pockes " is the term used.1 The name had become a by-word in Shakespeare's time,
and was clearly used with reference to the opprobrious disease that had been
known in the country for a century. If it was now and then used for the smallpox
in the 17th century, it was only a brief aberration from the common usage. A
current notion of the present day, that "the pox" originally meant the smallpox,
depends upon a curious error which I shall deal with in a note.2
1 "These be they that corrupt the whole generation of mankind
in your realm, that catch the Pockes of one woman and bear them
to another," etc. Cited by Beckett,
Phil. Trans, xxx. (1718), p. 845. In Fabyan's Chronicle, which is supposed to have been
written not long before his death in 1512, it is stated (Ellis's edition,
p. 653) that Edward IV., during an expedition against the Scots
in 1463, "was then vysyted with the syknesse of pockys." Of
course the name given to the king's malady by Fabyan is of no
value as diagnosis ; but he would hardly have used the word at all
if it had not been then in men's mouths, as it well might be in the
very years of his writing, the disease, which was certainly called
"the Pockes "in 1530 (as above), having invaded England about
1495-7.
2 In Webster's, Todd's, and other dictionaries it is stated that
pox formerly meant the smallpox, and "was often employed in this
signification in imprecations and exclamations." This absurd
error is traceable to a note by Dr. Farmer, the commentator on
Shakespeare. In Love's Labour's Lost, v. 2, a lady in waiting exclaims, "A pox of that jest!" whereon Theobald remarks that the
language is unbecoming in a lady. Farmer replies, "But there
needs no alarm—the smallpox only is alluded to,"
inasmuch as the jest to which the lady replied was, "Oh that your face were not so
full of O's!"
i.e., pitted with the smallpox. Even if that be the
30 THE POX, THE SMALLPOX, AND THE COWPOX.
The lues venerea was called in English the pockys, pockes, or pox for a reason
that the student of its history finds no great difficulty in making out,
although the name cannot but seem inappropriate to those who have heard of the
disease only in its modern forms. A striking character of the great epidemic
which began in 1494 was the general eruption on the skin; in some of the
contemporary accounts that eruption (now reckoned a "secondary") overshadows all
else in the disease. The contemporary accounts were collected in two volumes
published at Venice by Luisini in 1566.1 In another
meaning, it was a special conceit for the occasion, or a play upon the
well-known ordinary Shakespearian use of the word. Farmer supports his comment
by two references to contemporary usage. Davison, he says, has a canzonet "on
his lady's sickness of the poxe." Now, in all the three editions of Francis
Davison's Poetical Rapsodie, published in his lifetime (1602,1608, and 1611),
the title of the poem is "Upon his Ladies sicknesse of the Small Pocks''; but
in a pirated and careless reprint of 1621, from which Farmer had quoted, the
word "small" is omitted by the printer, and the name of "Th. Spilman" is also
omitted from the foot of the poem, so that Farmer assigned it to Davison,
although that poet had been careful to distinguish it, along with poems by Sir
John Davies and others in his volume, from his own compositions. That Davison
knew the correct use of the French terms also, is clear from the heading to his
translation of an epigram by Martial, about drinking out of the same glass—"A
Monsieur Naso, verole." Farmer's other reference is to an undoubted use by Dr.
Donne, in a letter to his sister, of the Pox for the Smallpox. I have found
another similar usage by Donne in a letter to Sir R. D., in which he says of "my L. Harrington,'1 that " now they know all his disease to be the Pox, and Measels mingled." But Donne's 17th century abbreviation is exceptional, and
never became established.
1. De morbo Gallico, 2 torn. Venetiis, 1566.
WHY THE POX WAS SO CALLED. 31
of them (by Le Maire) we read that the disease in Savoy was called "la clavela," from the eruption of hard knots, pimples, blebs, etc., on the skin,
la clavelee being the modern French name given to smallpox of sheep for the same
reason. In the monograph by Nicholas Massa, of Venice, which was long regarded
as the most authoritative, although Hensler questions its value as first-hand
testimony,1 pustulœ diversœ et aliœ; infectiones cutaneœ is the first line in
his formal definition of the disease. In his fifth chapter, devoted to the
Pustulœ, he says they occurred over the whole body—on the limbs, on the face
and head, and amongst the roots of the hair. In his particular description we
find such terms as elevated, tumid, moist ; red, livid, whitish; small, dry,
itching ; broad, flat, soft. They came out comparatively early in the disease
(second or third week even), and their outbreak was often the signal for the
notorious pains in the head and limbs to abate. In many of the cases the
pustules overshadowed everything else to such an extent that no primary lesion
was thought of. It is clear that Massa thought the disease was of the nature of
an eruption; and it is that theoretical bias which in part leads Hensler to
distrust his account. But the term pustulœ is used by the contemporary writers
generally;2 from whom we learn also that the "pustules'' broke and became
foul, corroding or eating sores, that warty excrescences grew from the floor of
the latter, and that fatal bleedings sometimes
1 Geschichte der Lustseuche, Part I., 1783, p. 131.
2 See the excellent summary of facts relating to the skin affection of the great epidemic in
Haser's Geschichte der Med. u. epid. Krankh., vol. iii. pp. 264 7, 3rd ed. Jena, 1882.
32 THE POX, THE SMALLPOX, AND THE COWPOX.
occurred from the sores about the face. It may be conceded that the same term
(pustulœ) was applied also to the primary lesions, and that much of the
description relates to the latter; but the occurrence of pustulœ malœ
per totum corpus is too explicitly and circumstantially stated to be held in any
doubt.
The secondary exanthem of the disease, as we now know it, is all that represents
that terrible feature of the great epidemic ; it was the original pustnlœ on
the skin that gave it its French name of verole and its English name of pox.
Therefore, when a disease of entirely different antecedents and pathology came
into common notice,—namely, the contagious pustular skin disease which had been
known in Arabia and the East for centuries, and in Europe bore the mediaeval
Latin name of variola,1—it was called the lesser pox or the smallpox, because it
had as its obvious feature an outbreak of true pustules resembling in their
common and loathsome aspect, although by no means in minute or distinctive
characters, those so-called pustules which had been the most obvious feature,
especially on the face, of the great epidemic that first became notorious as
syphilis, having determined the colloquial name of the latter.3 In the
subsequent history, syphilis lost its more horrible forms of skin eruption, but
it retained in England its colloquial name of pox, which had a literal
1 Used in that specific sense, it is said, first by Constantinus
Africanus, who brought the Arabian medical teaching to Salerno
about 1060.
2 Beckett (Phil, Trans, xxxi. p. 56) says, "Great Pockes or
Pustules on the surface of their bodies, from whence the Pox is
denominated."
WHY THE COWPOX WAS SO CALLED. 33
meaning only with reference to the original "pustular" type of its secondary on
the skin. The pox, or a pox, meant from the first what it still means ; it did
not as a rule mean variola unless it were qualified as the small-pox or
lesser
pox.
Accordingly, when common usage in the dairy districts of England gave the name
of cowpox (at what precise date is not known) to a certain typical or
characteristic malady of the cow's teats, that name was given in respect of
certain well-understood "pocky " characters, in the Shakespearian sense of the
word,1—the foul, ulcerative, and corroding character of the sores on the teats,
and their contagious property. It is, indeed, by no means unlikely that it was
the sores acquired by the milkers from handling the teats which first led to the
affection being named at all ; and there can be no doubt that common usage had
fixed upon the salient characters and had recognised the true affinities of the
malady when it named it a pox, although it had none of the opprobrious
associations of the classical name. Cowpox was the pox of the cows' teats, which
milkers were liable to catch ; in Norfolk the name was pap-pox. Its
circumstances and mode of production are perfectly simple, and will be stated
afterwards in the unpretending language of a Gloucester cow-doctor of Jenner's
time (chap. iii. p. 56).
This disease was fancifully represented as an amulet or charm against smallpox,
by the idle gossip of credulous persons who listened only to the jingle of the
names. The milkers themselves must have had the
1 As in Hamlet, Act v. Scene 1, 1st clown.
34 THE POX, THE SMALLPOX, AND THE COWPOX.
hard teaching of experience and the light of common sense to keep their
credulity in check, while the medical men who were called to treat the milkers'
sores, as well as the cow-doctors, would be puzzled to see where the resemblance
to smallpox came in. A fancy of that kind could not exist along with real, even
if empirical, knowledge of the two diseases, let alone the frequent experience
that cowpoxed milkers could be inoculated with smallpox, or could catch
smallpox like other persons. The fancy was the result of a merely notional,
nominal, or verbal dealing with the matter. The kind of apprehension hardly
deserves even to be called notional ; for, to a pathologist or epidemiologist,
it is as truly nonsense to speak of cowpox becoming smallpox as it is legitimate
nonsense to prove that a horse-chestnut is a chestnut horse.
It was reserved for Dr. Jenner to take up that surprising legend, and make it
scientifically passable, despite the impatience and ridicule which his prosaic
medical neighbours in the cowpox districts had met it with. It is difficult to
acquit Jenner of recklessness, or of culpable laxity, even in the very inception
of his idea. There is just one thing that may be pleaded as having misled him in
an excusable way, and that is the form of vesicle which cowpox assumes in the
first few days of its development on the milker's hand. We know now, since the
experiments of Ricord, Henry Lee, and others, that a sore of the pox proper, or
of syphilis, when inoculated on the skin, begins in the same kind of whitish
vesicle as the milker's cowpox, and that the classical pox and the cowpox are in
that, as in other respects, closely parallel (see chap. v. p. 119). Jenner
was with-
FIRST TRACES OF JENNER'S INQUIRY. 35
out these modern aids from experiment to keep him right, although his earliest
critic, Moseley, saw quite clearly, in 1798, "solely on the ground of analogy
and pathology," that cowpox was the lues bovilla, and that smallpox and cowpox
were "radically dissimilar." But the mere common sense of the case, the obvious
concurrence of evidence, the intuitive synthesis, the simple pointing of plain
facts, would have kept him right, if he had not been caught up into a seventh
heaven of verbal illusion.
The fact that Jenner carried a drawing of a milker's cowpox vesicle to London in
1789, is the first good evidence of his interest in the matter. Hunter's
correspondence with him, which went on some two or three years beyond that
date, contains no reference to cow-pox ; and there is no reason to suppose that
Jenner dealt with this new subject otherwise than in the haphazard and indolent
way in which he had dealt with the cuckoo problem, the hibernation problem, and
the migration of birds.1 From the year 1789, when he had got so far as a drawing
of a milker's sore in its vesicular stage, there is nothing more heard of cowpox
until 1794, in which year Jenner would seem to have been rather full of the
subject. He spoke of it in his correspondence with Cline,2 who mentioned it to
Joseph Adams, one of
1 He had promised a paper for the Royal Society on the Migration of Birds ever since 1787. It was printed posthumously in the
Phil. Trans., vol. 114 (1824). It is a rambling, rhetorical discourse
of no scientific value. Baron gravely tells us that Jenner "ascertained the laws which regulate the migration of birds "
(Life, vol. i. p. 118).
2 Cline to Jenner, nth Aug., 1796, in Baron i. 134.
36 THE POX, THE SMALLPOX, AND THE COWPOX.
the Hunterian set, who made a reference to the supposed antagonism of cowpox to
smallpox in the first edition of his Morbid Poisons (1795), without mentioning
where the idea had come from. He spoke of it also in conversation with his
intimate, the Rev. Dr. Worthington, who wrote of Jenner's speculations to his
correspondent, Dr. Haygarth, of Chester, a medical celebrity of the time. Haygarth's reply (15th April, 1794) is interesting : "Your account of the
cowpox is indeed very marvellous, being so strange a history, and so
contradictory to all past observations on this subject, [that] very clear and
full evidence will be required to render it credible. . . . I trust that no
reliance will be placed upon vulgar stories."
It is proof, also, of the
prevalence of a certain amount of talk on the matter in medical circles in the
west country, that Dr. Beddoes, the leading practitioner in Bristol, should have
made a passing reference to it among the "Queries respecting Inoculation,"
which he appended to the translation (London, 1795) of the Spanish treatise on
Femoral Hernia by Gimbernat.
It was not until May, 1796, that Jenner took the first step to give effect to
his ideas. Having heard of cowpox among the milkers at a farm near Berkeley, he
took off some of the fluid from a large vesicle on the hand of a dairymaid,
Sarah Nelmes, and on the 14th May inoculated it at two places on the arms of a
boy, James Phipps, aged eight years. The experimental inoculation held, just as
the accidental inoculation of milkers held, especially at cracks or scratches on
their fingers. On the 2nd of July Jenner inoculated the boy with smallpox, by
way of proving whether the previous cowpoxing had made him insusceptible of the
variolous infection.
REJECTED BY THE ROYAL SOCIETY. 37
In the course of the autumn or winter he put together a number of statements
which he had picked up about cowpox in cows or milkers, and several cases of
cow-poxed milkers known to himself who had not taken epidemic smallpox
subsequently, or who had resisted the artificial inoculation of it.
Out of these
materials, along with the experiment on James Phipps, he constructed a paper,
and sent it, perhaps accompanied by the drawing of the cowpox on the hand of the
milker, Sarah Nelmes, to the Royal Society, either in the end of 1796 or early
in 1797. It was handed about, perhaps in an informal way, and was shown by Sir
Joseph Banks to Lord Somerville, president of the Board of Agriculture. The
opinion formed of it, particularly by Everard Home, was unfavourable, so that
after having been shown to the Council of the Society,1 it was returned to
Jenner. The subject was new to science, and the evidence for Jenner's contention
must have seemed hardly strong enough to justify the referees in giving the
paper a place in the Philosophical Transactions. Lord Somerville, however,
stated that he had heard from a practitioner at Blandford, in Dorset, that the
protective power of cowpox against smallpox was talked of in that county also,
which was, indeed, the scene of the earliest known experimental cowpoxing by
Farmer Jesty, and probably the native soil of the legend.
There is no exact record of the line taken in the original paper ; but we know
that it contained only the one cowpox experiment on James Phipps, and that it
1 Jenner to Moore, about 1809, in Baron ii. 364.
38 THE POX, THE SMALLPOX, AND THE COWPOX.
contained neither the horse-grease cases nor the horse-grease experiment, which
had no existence until March, 1798. It is probable, therefore, that the famous
horse-grease doctrine of the source of all genuine cowpox, if it occurred in the
original paper at all, was no more than outlined therein. The rejection of his
paper by the Royal Society gave Jenner the opportunity of altering it
considerably, before he brought it out in 1798, just as the return of his cuckoo
manuscript (at his own request, however) had enabled him at the last moment to
introduce the startling novelties described in the foregoing chapter. As no
historical scrutiny of the great Jennerian legend can be too minute, it will be
proper to consider, before we go farther, what had been the doctrine of cowpox,
and the evidence for the same, which Jenner originally offered to the Royal
Society.
Uncomplicated with horse-grease, the doctrine of cow-poxing was the simple
country tale that milkers who had acquired the pox of the teats on their fingers
were protected from smallpox. In dressing this up for the Royal Society, Jenner
had, of course, to assume the airs of a man of science, and, above all, to bring
in experiments. A century of English science had shown that any doctrine or
project, no matter what its dialectical absurdity, was sure of an attentive
hearing, and even a warm welcome, if there were a show of experimentation about
it. It was not until Jenner had got some experimental evidence that he
proceeded to put the vulgar cowpox legend into the form of Royal Society science
; without a certain amount of experimental support, he would hardly have
ventured to bring it forward at all, for the ordinary common-sense medical
experience of
EXPERIMENT AND EXPERIENCE. 39
his neighbourhood was dead against the protective idea.
The experimentation was of two degrees: firstly, to inoculate old cowpoxed
milkers with smallpox in order to see whether they would take it; and, secondly,
to give the cowpox of purpose to a child, and then apply the variolous test. Why
any one wanting to get at the truth should prefer experiment to casual
experience in the case of old cowpoxed milkers, is beyond comprehension ; the
real but unavowed and perhaps unconscious object of experimenting upon them
was, in fact, to circumvent experience, and to find a "scientific" reason for a
comfortable illusion. Jenner accordingly kept silence about the cases of
cowpoxed milkers subsequently smallpoxed, which he might easily have collected
in considerable numbers from the experience of his own district. He confined his
attention to such cowpoxed milkers as had not subsequently received smallpox
either by accident or design ; and these cases he adduced as experimental proof
of the protective power of cowpox.
In two or three of them, the experimental test had been merely the "exposure" of
the cowpoxed person to the contagion of smallpox—as if the majority of adults
and elderly persons in those days had not been equally exposed with equal
immunity. In a few others the experimental proof was discovered retrospectively
in the failure to inoculate them with smallpox when others were being
inoculated; but it was not attempted to prove that these failures in cowpoxed
adults were more frequent than in adults not cowpoxed. Two or three more were
variolated by Jenner himself with the particular intention of testing
their resistance acquired
40 THE POX, THE SMALLPOX, AND THE COWPOX.
through cowpox. Quite elderly milkers were chosen, including worn-out paupers,
in order to prove that the lapse of time did not weaken the resistance—as if
advancing years did not also weaken the susceptibility to the smallpox virus.
But it is when we come to the ethical credit of Jenner's original proofs of
protection by experimental test that we have most reason for amazement. If his
logic was bad, his candour was worse. "I conceived it," he wrote, "to be of the
greatest importance in conducting these experiments to attend to the state of
the variolous matter previous to inserting it into the arms of those who had
gone through the cowpox." The attention which he wanted paid to "the state of
the variolous matter" was exemplified in his own dealings with case iii. John
Philips, cowpoxed at nine, then aged sixty-two, was tested for protection by
inoculating him with variolous matter "taken from the arm of a boy just before
the commencement of the eruptive fever."
I must leave the full significance of
this artifice to be made clear in chapter vi., on "The Variolous Test" ; but I
can anticipate so far as to say that the method of inoculation which Jenner
warned his readers to use in their tests, if they would avoid "much subsequent
mischief and confusion," was simply the extreme form of the bogus methods of Gatti and Daniel Sutton, whereby the effect of inoculation was reduced to the
mere shadow or formality of smallpox. The matter for inoculation was not taken
from a natural or accidental eruption of smallpox ; it was taken from the local
pustule alone of an artificial inoculation, and it was taken from the very
earliest period of the local pustule
A BOGUS TEST. 41
at which any fluid could be got at all, or "just before the commencement of the
eruptive fever." By that means, as a French variolator of the time reports, "
the smallpox becomes at length weakened to the point of nullity, so that the
last inoculations are without effect."1
The deliberate choice of the merely
serous fluid from the merely local pustule of a previous inoculation on the arm
made the absence of anything like effective variolation a certainty. That was
how Jenner himself circumvented the damning truth of ordinary experience by the
method of experiment, and that was how he earnestly desired that all others
should try the variolous test after him. A mode of inoculation was coolly
chosen, which was likely to produce the minimum of effect; and when the minimum
of effect was produced, the previous cow-poxing of the individual got the credit
of it.
It is not surprising that the Royal Society should have found Jenner's
experimental proof of protection both meagre in quantity and doubtful in
quality. But the paper might still have been made a valuable one by giving in it
a precise account of the cowpox itself, which was a curious and hitherto
undescribed disease. The paper contained no such precise account. It can hardly
have been so dominated by crude theorizings about horse-grease as the later form
of it, the Inquiry of 1798; but the opportunity of giving a full, candid, and
scientific account of cowpox was not embraced. It does not appear that Jenner
had ever any intimate first-hand knowledge of cowpox in the cow,
such as
1 Salmade, La Pratique de I'Inoculation. Paris, An. vii. (1798) p. 51.
42 THE POX,. THE SMALLPOX, AND THE COWPOX.
Clayton, the Gloucester cow-doctor, had (see chap, iii.), or such as Ceely
acquired by diligent observation in the Aylesbury district forty years later. He
knew, however, that it was an ulcerous condition of the teats, which "the
cow-leech usually kept in check by escharotics," that it was a local malady,
and that it was catching only through contact with the matter both to other
cows and to the milkers. Of the milkers' sores he may well have had a more
particular knowledge, for they were not so very uncommon, and much more easily
studied. He knew them to be of the nature of painful, phagedenic ulcers, which
varied in severity or inveteracy, sometimes taking a long time to heal ; they
began in a big whitish or bluish-white bleb, almost the size of a sixpenny
piece, as his own picture of Sarah Nelmes' hand clearly showed ; the tumid white
skin shrivelled after a week or two, and either broke to become an open sore, or
formed a crust (as the sores on the cow's teats were apt to do), beneath which a
greyish foul ichor would continue to be produced for some time. It was not a
nice disease, any way one might look at it ; and Jenner ought to have known why
the dairy folk had instinctively called it a pox.
Jenner's contribution to the scientific knowledge of it in milkers consisted of
little more than the good coloured plate of the infection on the hand of the
dairymaid. He does not even say whether the vesicle in that case became the
painful ulcer that it usually became ; he is content to let the reader go away
with the impression, for the particular case which he illustrates, that the
disease was a vesicular " eruption." When Ceely came to deal with the subject in
a scien-
LIKENESS TO SMALLPOX IMPLIED. 43
tific manner, he represented the successive stages of pimple, vesicle, and ulcer
side by side ; and any one may see that the ulcers in Ceely's plates l
have
"specific" characters of the several types of indurated and inflammatory. No
plate was given of the inoculated disease in the boy Phipps ; but the details
in the text are rather more full than in the case of the dairymaid from whom
the infective matter was taken. I now give the sentence on which the emphasis
was intended to fall: "The appearance of the incisions in their progress to a
state of maturation were much the same as when produced in a similar manner by
variolous matter."
That statement really amounts to little ; it merely tells us of appearances
presented by the incisions in their progress to a state of maturation ; but the
language is the old terminology of smallpox inoculation, and the impression
left upon the not very critical reader is that cowpox was a form of smallpox. It
is possible that Jenner may have so believed, notwithstanding the total
unlikeness of the ulcers on the cow's teats or milker's fingers to the
contagious skin-eruption of man; it may never have occurred to him to ask
himself why cowpox had been called a pox in colloquial speech long before his
time. It is conceivable that his ambition to find a scientific basis for the
legend of cowpox protecting from smallpox blinded him to obvious facts. But that
can never justify him in coming before the Royal Society and the medical
profession in the way that I have now to speak of.
1 Trans. Prov. Med. and Surg. Association, 1840 and 1842.
44 THE POX, THE SMALLPOX, AND THE COWPOX.
The title of Jenner's cowpox paper is : "An Inquiry into the Causes and
Effects of the Variolæ Vaccinæ, a Disease discovered in some of the Western
Counties, especially Gloucestershire, and known by the name of the Cowpox." An
objection might be taken to "discovered," but let that pass. The leading line
in this full and learned title is Variolae Vaccinæ, which is the only name in
the short title. Now Variolæ; Vaccinae is Latin for
smallpox of the cow. An
affection of cows and milkers, which had been known to country people for
generations as the cowpox, is suddenly introduced to the learned, who had never
heard of it before, under a brand-new name. The new name is put in the
forefront of the title, it overshadows the old country name both by its
prominence and by its semblance of scientific precision, and, for purposes of
short reference, it becomes the sole name. This startling novelty is on the
title-pages, and only on the title-pages. Jenner never says, in the preface or
text, that the name is a new one, hitherto unheard of in veterinary or medical
writings; he never says a single word to justify its invention ; he never once
uses it in the preface or text at all. But there it stands in the title as the
full, correct, and scientific name of the disease, to be copied in journals and
repeated in a hundred ways when not another word of the, essay would be copied
or repeated, carrying with it, in short, all the power over the ideas that a
descriptive or suggestive synonym for an unfamiliar thing does naturally carry
with it.1
1 Jenner never publicly defended the innovation, but the following jottings
were found among his posthumous papers, and printed by Baron (ii. 30):—
FACTS SUPPRESSED. 45
As one subterfuge entails many more, so Jenner's misleading title-page led him
into the suppression of material facts and the suggestion of false issues
throughout his text. Only one instance concerns us at the present stage, the
great historical instance of his first vaccination upon James Phipps. The
incisions on his arms, we are led to believe, went on at first very much as if
he had been cut for the smallpox itself; on the ninth day he was perfectly well;
there was some erysipelatous redness, "but the whole died away (leaving on the
inoculated parts scabs and subsequent eschars) without giving me or my patient
the least trouble." Very hearty and reassuring, no doubt; but the modest
parenthesis about subsequent eschars is the cloven hoof peeping out. The meaning
of eschars following the first encrustation of the cowpox sores on the arm is
made quite clear to us by the narratives of more candid and honourable men who
have vaccinated with matter direct from the cow's teats or the milker's fingers.
To take an instance from the very earliest vaccinations after Jenner's own,
those described by Hughes, of Stroud:1 William King, aged fifteen, was
inoculated in December, 1798, with matter one remove from that taken by Jenner
himself from a poxed cow at Stonehouse ; on the tenth day the lad had the
efflorescence or areola just as James Phipps had ; on the eighteenth day "
the
"The origin of smallpox is the same as that of cowpox ; and as the latter was
probably coeval with the brute creation, the former was only a variety springing
from it. On this ground I gave my first book the title of 'An Inquiry into the
Causes and Effects of the Variolœ Vaccincœ'—a circumstance which has since been
regarded by many as the happy foresight of a connexion which was destined by
future evidence to become more warranted."
1 Med. and Phys. Journ. i. (1799), p. 318.
46 THE POX, THE SMALLPOX, AND THE COWPOX.
central scab put on the appearance of an eschar ; " on the twenty-ninth day the
eschar came away, leaving an ulcer a quarter of an inch deep, which was treated
with mercurial ointment and gradually healed up.
That is the meaning of the furtive parenthesis, "leaving on the inoculated
parts scabs and subsequent eschars." If we allow for the eschars corning into
view after the superficial crusts had fallen, for the gradual exfoliation of the eschars (usually helped by poulticing), for the filling up of the ulcerous
cavities by granulations, and for the covering over by new skin, we shall have
to conclude that James Phipps, even if he were "perfectly well on the ninth
day," had sore arms for several weeks. The two places on his arms could have
been no more than healed on the 2nd of July, when he was tested with smallpox ;
according to the usual practice, the smallpox matter would have been inserted on
the arms near to the place of vaccination ; and, under the circumstances, it
would not have been surprising if the local pustule had failed to come to
maturity, even assuming that Jenner had used a more certain means to inoculate
the smallpox than the bogus method of Sutton which he advised his readers to use
in their tests. We do not know that the local variolous pustule was actually
kept back in the case of James Phipps ; Jenner does not say so ; he says merely
that "the same appearances were observable on the arms as we commonly see when
a patient has had variolous matter applied, after having either the cowpox or
the smallpox." When he was tested a second time, "no sensible effect was
produced on the constitution." "Poor Phipps," as Jenner called him, was often
tested and never "took"; he was a poor,
THE ROYAL SOCIETY NOT SATISFIED. 47
ailing creature, suspected of phthisis, but perhaps only scrofulous ; he was not
a fair subject for trying smallpox inoculation upon.
All things considered, it was not to be wondered at that the referees of the
Royal Society declined to recommend Jenner's cowpox paper for publication in
the Philosophical Transactions. There was not a very high standard of critical
insight at the Society under the presidency of Maecenas Banks;1 but there would
have been at all events an appreciation of authenticated details, of plain
matter of fact, of directness, and of all such qualities by which the good faith
of a scientific worker would be guaranteed even if mistakes lay concealed in
his observations and fallacies in his reasoning. Jenner had everything in his
favour at the Royal Society. His previous communication had been received with
favour and even indulgence ; he had been elected a fellow a few months after its
publication ; Banks, the president, was his friend ; Everard Home (whom he
blamed most of all for the rejection of the paper on cowpox) had been his
fellow-boarder at John Hunter's five-and-twenty years before ; he had found a
novel subject in an undescribed disease of scientific interest and of practical
importance to milk producers and milk consumers. The reasons that could have
led to the paper being returned to him can only be guessed; but we shall not go
very wide of the mark if we guess them to have been a certain meagreness in the
original observa-
1 See Whewell, History of the Inductive Sciences, with reference to the
reception of Thomas Young's undulatory theory of light (1802).
48 THE POX, THE SMALLPOX, AND THE COWPOX.
tions upon cowpox, a certain secretiveness in the manner of their setting forth,
a suspicion of irrelevancy or one-sidedness in the cases of protected milkers,
and a pervading sense of something improbable in expounding the properties of
such a disease as cowpox under such a title as Smallpox of the Cow.
CHAPTER 3.
JENNER'S " INQUIRY."
THE historian of the Cowpox Legend has always a double thread to unwind : on the
one hand, the secret history of Jenner's project, as we can now follow it by the
help of posthumous documents ; and, on the other hand, the history of it as it
was presented to and received by the public and the medical profession at the
time. If the profession and the public had been permitted to know then all that
is known now (not reckoning the practical failure of cowpox to exterminate
smallpox after ninety years' trial), they would probably have found out Jenner
to be the vain, imaginative, loose-thinking person that he certainly was by
nature, and they might have so acted as to prevent him from becoming the
impostor and shuffler that the course of events made him.
After the refusal of his paper on Cowpox by the Royal Society, Jenner resolved
to publish it on his own account. We know from his biography that he had
resolved to do so in the autumn of 1797 ; so that it was not the sudden
accession of new matter in March, 1798, that induced him to offer to the public
that which the Royal Society had refused, although the fresh evidence doubtless
served to hasten the execution of his resolve.
50 JENNER'S " INQUIRY."
Jenner did not take his rebuff by the academical men of science in the chastened
spirit which such rebuffs ought always to create in us. On the contrary he bore
a grudge against Sir Joseph Banks and Sir Everard Home for years after. But he
took the opportunity, all the same, of amending and fortifying the argument of
his paper.
The year 1797, in which he had his manuscript returned, saw the real adoption
of the famous doctrine of horse-grease as the one and only source of genuine
cowpox. It is true that cases i., ix., and x. in the casual lot of old cowpoxed
milkers are introduced as proofs of the horse-grease origin of cowpox; and these
cases may have been in the original paper. If so, the evidence offered to the
Royal Society on the origin of cowpox from the horse would have stood as
follows:—
Case I.—Joseph Merret remembered having been long ago, in 1770, at a farm where
several horses began to have sore heels, which he frequently attended to. The
cows soon became affected with the cowpox, and soon after several sores appeared
on his hands. Conclusion : Joseph Merret carried horse-grease to the cows.
Case IX.—Not quite so long ago, in 1780, William Smith, this parish, was on a
farm where a horse had sore heels, and it fell to his lot to attend him. The
cows on the farm developed cowpox, "and front the cows it was communicated to
Smith." In 1791 Smith again caught cowpox sores on his fingers at another farm,
there being in that case no record of grease among the horses. In 1794 he
acquired cowpox ulcers a third time in milking cows, the relevant circumstance
of greased horses being again absent.
Case X.—Sixteen years before, in 1782, Simon Nichol lived as a farm-servant with
Mr. Bromedge. He had to apply dressings to the sore heels of a horse, and at the
same time assisted in milking the cows. "Not until several weeks after he had
begun
THE HORSE-GREASE THEORY. 51
to dress the horse" did cowpox occur among the cows.
He quitted Mr. Bromedge's
service without any sores upon him; but, soon after going to his next place, his
hands became affected with cowpox sores. " Concealing the nature of the malady
from his master, he was employed in milking, and the cowpox was communicated to
the cows."
These artless reasonings were hardly up to the standard of Newton's Rules of
Philosophizing, or of any other rules of evidence which the Royal Society was in
the habit of applying to the matters that came before it. Even Jenner himself
must have been conscious that the evidence for horse-grease, assuming that he
had given it a place in the original paper, wanted strengthening. Accordingly
we find him, in the course of the year 1797, setting about new inquiries on
horse-grease and its relation to cowpox. Biographer Baron's account of these
researches is, that Jenner in 1797 "made many efforts to generate cowpox from
the heel of the horse." The sole ground of this grandiose assertion is
Jenner's
own statement that he "sent a messenger to Bristol to procure virus [from the
horse] in vain. I even procured a young horse, kept him constantly in the
stable, and fed him with beans in order to make his heels swell; but to no
purpose." This beautiful experiment having failed, the research was laid aside
until February, 1798, when three cases occurred in Jenner's parish of stablemen
with sores on their hands, caught, it was supposed, from dressing the heels of a
greased horse. At the same farm cowpox occurred on the cows' teats about the
same time ; so that there was now an abundance of material within Jenner's
reach.
On the 16th of March he inoculated a child on the
52 JENNER'S " INQUIRY."
arm with matter from a horse-sore in one of the stablemen, and on the same day
he inoculated another child with matter from a cow's teat. From the latter child
he continued the succession of cowpox matter upon children's arms through four
removes, and on the 24th of April he left Berkeley for London with the
manuscript and drawings of the Inquiry in his pocket. The preface of the
Inquiry is dated (from London) on the 21st of June, and in a week or two after
it was in the hands of the booksellers, a quarto of some seventy pages, in the
largest of type, and with the widest of margins, illustrated by four coloured
plates, and costing seven shillings and sixpence.
The name of Variolæ Vaccinæ on the title-page, without any apology for it, or
even a single repetition of it, in the text, was Jenner's master-stroke. Next to
his title-page in effectiveness was his very adroit preface. Some few would
read the book, more would read the preface, and most would get their impressions
from the title alone. The preface is in the form of a letter to Dr. Parry, of
Bath.
"My dear Friend,—
"In the present age of scientific investigation, it is remarkable that a
disease of so peculiar a nature as the Cow Pox, which has appeared in this and
some of the neighbouring counties for such a series of years, should so long
have escaped particular attention.
"Finding the prevailing notions on the subject, both among men of our
profession and others, extremely vague and indeterminate, and conceiving that
facts might appear at once both curious and useful, I have
SCIENTIFIC PRETENSIONS. 53
instituted as strict an inquiry into the causes and effects of this singular
malady as local circumstances would admit."
As coming from a fellow of the Royal Society located in the very centre of the
cowpox districts, nothing could be more in character than that preface. The hour
was come, and the man. A peculiar country disease had been long known, but had
hitherto escaped particular attention ; but the scientific spirit of the age had
penetrated to it in the person of Edward Jenner, M.D., F.R.S. ; and the
extremely vague and indeterminate notions hitherto held about it by rustics and
country practitioners were now to vanish before a strict inquiry, and to be
replaced by scientific facts at once curious and useful. As a programme this was
singularly in keeping with the fitness of things. It was exactly what we had a
right to expect, what we all knew that it was the business of science to do.
When a fellow of the Royal Society, adorning the vocation of a country doctor,
promised to substitute strict inquiry for the extremely vague and indeterminate
notions prevailing on a curious subject among men of his own profession no less
than among others, there was every reason to expect that he would be as good as
his word ; it was just the sort of thing that the Royal Society and its several
fellows were specially constituted for and dedicated to. The modest and at the
same time firm tone of this preface, from "My dear Friend "
down to "as strict
an inquiry as the circumstances would admit," could not fail to bespeak
confidence in the author, the more so that he had already earned for himself
the
54 JENNER'S " INQUIRY."
highest scientific affix to his name by using well his rustic opportunities.
If we are ever disposed to complain of the laxity of criticism which allowed
Jenner's nostrum to pass into currency as a good thing, let us remember what a
coup de main he was able to execute. The fabric of things is based in a sense
upon credit ; and the world was very willing to extend its credit to one whose
pretensions as an innovator were justified equally by his scientific rank and by
his unique opportunities. Nowadays we can bring historical scrutiny to bear upon
these events ; and in the way of such scrutiny we may now proceed to inquire
whether the pretensions of Jenner's preface were warranted by his text.
The notions concerning cowpox prevalent among his medical colleagues were, he
says, "extremely vague and indeterminate." Now these are just the terms in
which Jenner's medical neighbours in Gloucestershire were wont to characterize
the popular fancy, that the cowpox of milkers protected them from smallpox. We
have this important piece of evidence on the authority of Jenner himself, as
reported by his biographer. Dr. Baron writes:1 "Dr. Jenner has frequently told
me that, at the meetings of this Society [the Convivio-Medical, which met at the
Ship at Alveston in the southern division of the county, and was attended, among
others, by Fewster, the chief authority on cow-pox], he was accustomed to bring
forward the reported prophylactic virtues of cowpox, and earnestly to recommend
his medical friends to prosecute the inquiry. All
1 Life of Jenner, i. 48.
WHAT JENNER'S COLLEAGUES KNEW. 55
his efforts were, however, ineffectual ; his brethren were acquainted with the
rumour, but they looked upon it as one of those vague notions from which no
accurate or valuable information could be gathered, especially as most of them
had met with cases in which those who were supposed to have had cowpox had
subsequently been affected with smallpox."
These were the very men whom Jenner, in his preface, included among those who
held "extremely vague and indeterminate notions" on the subject of cowpox. But
the vague notions were not theirs ; they were the mere idle talk and old wives'
gossip of the country side, suggested by the jingling sound of
"cowpox—smallpox," and suited to the general character of medical folklore,
especially to the wide-spread belief in protection or cure by means of charms
or amulets. Fewster and the rest knew that there was nothing in it ; and in
course of time they came to regard Jenner as a bore, when he persisted in taking
the protective virtues of cowpox seriously, against their own abundant
experience to the contrary. Jenner, however, had one great advantage over
them—he was a fellow of the Royal Society ; it was no less than his prerogative,
as a man of science, to reduce the common notions about cowpox to the scientific
scale. Only, he ought not to have led the world to believe that his professional
neighbours shared these vague and indeterminate notions. They had good reason,
as men of experience, for not sharing them ; and Jenner had good reason for
knowing their invincible scepticism. So long, however, as he himself kept to his
scientific task of instituting as strict an inquiry as local circumstances
would admit, his rather unkind
56 JENNER'S " INQUIRY."
imputation of vague notions in the minds of other medical men might pass.
Besides the medical practitioners in the cowpox districts, there was another
class of men, the cow-doctors and horse-doctors corresponding to the
subsequently organized veterinary profession, who had a knowledge of these
matters, empirical perhaps, but certainly not vague and indeterminate. Whatever
the state of education formerly among the veterinarians, there had never been
lacking among them men of sagacity and natural powers of observing. One such
practitioner, Clayton, of Gloucester, who attended at most of the dairy farms
within a radius of ten miles of the city, was induced to put his experience of
cowpox on record for publication in the Contributions to Physical and Medical
Knowledge, issued by Dr. Beddoes, of Bristol, early in 1799, a volume which had
the honour of publishing also the first researches of Humphry Davy. Clayton gave
his evidence as follows1 :—
That the chief diseases of the cow are the lough, swellings of the udder, and
cowpox ; the two former are the most common, the latter being rarely seen except
in spring and summer ;—
That cowpox begins with white specks upon the cow's teats, which, in process of
time, ulcerate ; and, if not stopped, extend over the whole surface of the
teats, giving the cow excruciating pain :—
That, if this disease is suffered to continue for some time, it degenerates
into ulcers, exuding a malignant and highly corrosive matter ; but this
generally arises from neglect in the incipient stage of the disease, or from
some cause he cannot explain :—
That this disease may arise from any cause irritating or excoriating the teats
; but that the teats are often chapped without the cowpox succeeding. In
chaps of the teats they generally swell;
1 L. c, p. 387.
WHAT THE COW-DOCTORS KNEW. 57
but in the cowpox the teats seldom swell at all, but are gradually destroyed by
ulceration :—
That this disease first breaks out upon one cow, and is communicated by the
milker to the whole herd ; but, if one person was confined to strip the cow
having this disease, it would go no farther:—
That the cowpox is a local disease, and
is invariably cured by local remedies :—
That he never knew this disease extend itself in the highest degree to the
udder, unless mortification had ensued ; and that he can at all times cure the
cowpox in eight or nine days :—
That he is conversant with the diseases of the horse, and extensively employed,
particularly in curing the grease :—
That he cannot recollect ever to have had horses with the grease and cows with
the cowpox under care at the same farm :—
That he is very certain he has frequently had cows with the cowpox, where no
horses whatever have been kept :—
That the grease is most prevalent in the winter, at which time he has never
known the cowpox to occur.
These depositions of Clayton, the veterinarian, were taken down by Cooke, a
surgeon apothecary in good practice in Gloucester, who adds to Clayton's
statement : "There is little variation from this account in the information I
have obtained from some of the most respectable dairy-farmers in this
neighbourhood. Those who have seen the cowpox among their domestics all agree
that, if they have been soon afterwards inoculated for the smallpox, they have
had the disease very slightly ; but, since the late general inoculation, are as
fully satisfied that many have had the smallpox in a more decided manner who
some years before had the cowpox very severely." He gave also the notorious case
of a cowpoxed farmer who had died of the smallpox.
More evidence of the same kind was soon forthcoming,
58 JENNER'S " INQUIRY."
to which I shall refer in the next chapter, dealing with the reception that the
Inquiry met with from the profession and the public. I have given here the
experince of the best employed veterinarian in Jenner's own county merely to
show what stores of information were at his service if he had cared to use them.
Beddoes sent him a proof of the Gloucester evidence ; he sent also another paper
from his forthcoming volume, by Thornton, a surgeon of Stroud, who had been
inoculating the cowpox independently of Jenner in 1798,
and with rather
startling results. Neither the veterinary experiences nor the medical, as we
shall see later, were such as suited Jenner ; and this is how he replied to
Beddoes, on 26th February, 1799 :
"I have neither the leisure nor inclination at the present moment to enter into
an examination of their arguments, much less shall I attempt to refute the
opinions [why "opinions"?] of either of these gentlemen. . . . The same
equitable tribunal [the public], perhaps, will not fail to discriminate between
the man who sedulously employs the greatest part of his time in making
experiments for the complete investigation of a confessedly complex subject, and
him who appears peremptorily to decide on the truth or falsehood of a theory, on
the supposed authority of a few solitary instances, which after all may have
been mistaken or misunderstood."
Here we have the same lofty tone as in the preface of the
Inquiry, coupled with
a bold disparagement of evidence far more comprehensive on the veterinary side,
and far more fully and accurately recorded on the medical side, than his
own. This reply to Beddoes is the
DISPARAGEMENT OF OTHERS. 59
beginning of the long course of bullying, and most effective bullying, by means
of which Jenner bore down all honest experience adverse to his own pretensions.
Every candid reader, every man of the world, who has gone through this chapter
so far, will have begun to see that Jenner is not the sort of person who can be
taken at his own valuation. Let us then scrutinize this inquiry, "as strict as
the local circumstances will admit," these labours of "the man who sedulously
employs the greatest part of his time in making experiments for the complete
investigation of a confessedly complex subject."
The only real experiment in the paper on cowpox, as originally offered to the
Royal Society, was the inoculation of James Phipps ; the results of it, as we
have seen, were recorded with a brevity which enabled Jenner to suppress the
true and suggest the false. It is absurd to claim the dozen old cases of
cowpoxed milkers, who were subsequently inoculated with smallpox, as
experiments ; there were many cowpoxed milkers, as Cooke's inquiries showed,
who submitted to inoculation along with others, whenever a general inoculation
was afoot ; and Jenner's cases were only a few, favourable to his contention,
which he happened to have inoculated in the course of his own business or to
have heard of. So far from "sedulously employing the greatest part of his time
in making experiments for the complete investigation of a confessedly complex
subject," he himself stands for the man who "peremptorily decides on the truth
or falsehood of a theory, on the supposed authority of a few solitary
instances."
As regards his great doctrine of horse-grease being
6o
JENNER'S " INQUIRY."
the only source of genuine cowpox, his paper in its original form did not
contain a single experiment or even a single fact to show that horse-grease ever
gave rise to the pox on the teats of cows. Sarah Nelmes, whose cowpox sore
furnished the virus for the solitary James Phipps' experiment, is described
simply as having caught cowpox from milking her master's cows, the disease
having originated in a cow bought at a fair, and therefore spontaneously, on
Jenner's own admission. Whatever experiments he made between the return of his
paper from the Royal Society and the publication of the Inquiry were all done in
the course of five or six weeks in March and April, 1798. It may be conceded,
however, that it was the method of experiment which Jenner used, in so far as he
used any method at all; whereas his country neighbours merely took facts as they
came, and reasoned upon them in the ordinary way.
The ordinary experience of cowkeepers and cow-doctors, as we have seen, was that
cowpox arose here or there, by some concurrence of circumstances, in a
particular cow, and was transmitted to other cows by the matter on the hands of
the milker. As Clayton, of Gloucester, said : " if one person was confined to
strip the cow having the disease, it would go no farther." Cow-pox, in fact,
arose " spontaneously " in some one cow, on the top of some common affection,
such as chapped teats, or an eruption of pimples brought out by the spring
season or by an over-distended state of the gland ; although chapped teats or
pimples did not always end in cowpox. Neglect, as Clayton said, had a good deal
to do with it ; and, of course, the ruthless necessity
SPONTANEOUS
COWPOX IS SPURIOUS.
61
of relieving the turgid organ by "stripping " the teats tended to aggravate any
small beginning of soreness upon the latter. That was the rational or
common-sense view of how the pox of the teats arose in a cow here and there, and
it was abundantly confirmed by Ceely forty years after. The cowpox was "spontaneous," as the phrase ran ; but it became infective also, generally going
the round of every cow in the same shed, and very commonly affecting the milkers
with painful sores on the fingers, and with swollen and painful glands in the
armpits, which caused them to go about having their shoulders raised in so
characteristic away that every one knew what was the matter.
Jenner, in a modest footnote to the first edition of the
Inquiry, admitted that
there was such a thing as spontaneous cowpox of the cow's teats, "and
instances have occurred, though very rarely, of the hands of the servants
employed in milking being affected with sores in consequence, and even of their
feeling an indisposition from absorption." But why "very rarely "? Until
Jenner appeared upon the scene, this was the only cow-pox ; the past experience
of the country related to that, and to that alone. If the milkers "felt an
indisposition from absorption," the pox was the real thing, according to one of
his own tests ; therefore these awkward cases had to be admitted, but made "very rare." The motive of this deliberate sophistry comes out in Jenner's second
pamphlet: "Whether a disease generated in this way [spontaneously] has the power
of affecting the constitution in any peculiar manner, I cannot presume
positively to determine. It has been conjectured [why " conjectured" ?] to have
been a cause of the true cow-pox,
62 JENNER'S " INQUIRY."
though my inquiries have not led me to adopt this supposition in any one
instance ; on the contrary, I have known the milkers affected by it, but always
found that an affection thus induced left the system as susceptible of the
smallpox as before"
It is impossible to show more naivete in begging the question. The "genuine"
cowpox of Jenner was, in short, whatever should not be followed by an attack of
smallpox, whereas that cowpox was "spurious" which the smallpox contagion gave
no heed to ; and that distinction was called for in the first instance by way
of confronting the testimony of Jenner's medical neighbours, that they had
known many cowpoxed milkers (or, as Baron puts it, "milkers supposed to have
had cowpox") who had fallen victims to smallpox in the usual way.
The need having thus arisen to make out some cow-pox genuine and some spurious,
it remained to take off the arbitrary edge of the distinction by facts or
theories. The old spontaneous sort was on the whole spurious, so many milkers
having received no protection from smallpox by its means ; the genuine would
have to be something special, and obviously it must not be spontaneous. To
carry it to a source one remove off from the cow was enough ; and here was the
grease of the horse's hocks as if ready for the occasion. That Jenner believed
in his heart the grease itself to be of spontaneous origin, we know from his
comical attempt to induce it in a young horse by keeping him in the stable and
feeding him upon beans.
The curious and possibly misleading thing was that a farrier's or stableman's
sore on the finger, caught from a
A MISLEADING
RESEMBLANCE.
63
greased horse, was almost the same as a milker's sore caught from a poxed cow.
For an interesting illustration of that fact Jenner was indebted to his
experienced neighbour, Fewster, surgeon, of Thornbury, whose narrative is
printed in Jenner's second pamphlet.
"William Morris, aged 32, servant to Mr. Cox, of Almonsbury, in this county,
applied to me the 2nd of April, 1798. He told me that, four days before, he
found a stiffness and swelling in both his hands, which were so painful, it was
with difficulty he continued his work ; that he had been seized with pain in his
head, small of the back, and limbs, and with frequent chilly fits succeeded by
fever. On examination I found him still affected with these symptoms, and that
there was a great prostration of strength. Many parts of his hands on the inside
were chapped, and on the middle joint of the thumb of the right hand there was a
small phagedenic ulcer, about the size of a large pea, discharging an ichorous
fluid. On the middle finger of the same hand there was another ulcer of a
similar kind. These sores were of a circular form, and he described their first
appearance as being somewhat like blisters arising from a burn. He complained of
excessive pain, which extended up his arm into the axilla. These symptoms and
appearances of the sores were so exactly like the Cow Pox, that I pronounced he
had taken the distemper from milking cows. He assured me he had not milked a cow
for more than half a year, and that his master's cows had nothing the matter
with them. I then asked him if his master had a greasy hors ? which he answered
in the affirmative ; and further said that he had constantly dressed him twice
a day for the last three or four weeks or more, and remarked that the smell of
his hands was much like that of the horse's heels. ..."
Jenner's account of the grease is condensed into a few vague and
useless lines : "It is an inflammation and swelling of the heel, from which issues matter
possessing properties of a very peculiar kind, which seems capable of generating
a disease in the Human Body (after it has undergone the modification I shall
64 JENNER'S " INQUIRY."
presently speak of), which bears so strong a resemblance to the Small Pox, that
I think it highly probable it may be the source of that disease."
It is one of the evils of making a man a fellow of the Royal Society, that
people will be apt not to recognise any subsequent nonsense that he may write,
in the name of science, for what it really is. The horse-grease has so strong a
resemblance to smallpox, that he thinks it highly probable it may be the source
of that disease! But it is only after it has undergone a certain modification
that horse-grease resembles the smallpox and may be the source thereof. Here,
then, is a malady of a kind that may possibly be induced by feeding a horse with
beans to make his heels swell; next, a stableman, "having been appointed to
apply dressings to the heels of a Horse affected with the grease, and not
paying due attention to cleanliness, incautiously bears his part in milking the
Cows, with some particles of the infectious matter adhering to his fingers ; a
disease is communicated to the cows, and from the cows to the dairy-maids, which
spreads through the farm until most of the cattle and domestics feel its
unpleasant consequences. Thus the disease makes its progress from the Horse (as
I conceive) to the nipple of the Cow, and from the Cow to the Human Subject"—in
the form of the epidemic smallpox of history?
No one in 1798 could suppose that there was anything vague and indeterminate in
this account of cow-pox, and its relation to smallpox, Jenner having stated in
his preface that these were just the qualities which he was going to banish from
his treatment of the question, by instituting as strict an inquiry as the local
EXPERIMENT WITH HORSE-GREASE.
65
circumstances would admit; moreover, he had silenced the most experienced
veterinarian in the county of Gloucester (who had never met with cowpox
and horse-grease together at the same farm, but had often seen cowpox where no
horses were kept) with a reminder that he had better not attempt peremptorily to
decide the truth or falsehood of a theory on the supposed authority of a few
solitary instances, so long as he, Jenner, a fellow of the Royal Society, was
sedulously employing the greatest part of his time in making experiments for the
complete investigation of a confessedly complex subject.
But the only experiment on horse-grease that he had made, besides that of the
young horse kept in the stable and fed with beans to make his heels swell, was
the experiment to inoculate a child with the virus of a stableman's horse-sore.
Knowing what Jenner did of the nature of horse-sores on stablemen's and
farriers' hands, it was a reckless, not to say an unjustifiable thing in him to
seek to induce the same on a young child. Moreover, what was the experiment
designed to prove more than the inoculations by accident had already taught him
? He knew from his quite recent cases of horse-sores on the hands of stablemen,
in February, 1798, what the inoculated grease was
like; he knew also that two out of three horse-greased farmers or farriers
(cases xiv. and xv. of the Inquiry) had received smallpox infection
afterwards, the plain inference being that the one infection was nothing to the
other. An experimental trial after such an experience could only mean that he
was dissatisfied with the experience, that he meant to
circumvent the plain
66
JENNER'S " INQUIRY."
teaching of it if he could, and to tie knots upon the common-sense issues, by a
resort to so-called scientific method. As it turned out, his experimental
inoculation of the horse-grease virus upon a child resulted in rather more than
he found it expedient to disclose.
On the 16th of March, 1798, Jenner took virus from a sore upon the hand of a
stableman, Thomas Virgoe, who had been infected while washing the heels of a
greased mare, and inoculated it upon the arm of John Baker, aged five years. The
record of the experiment is sufficiently brief: "He became ill on the sixth day
with symptoms similar to those excited by cowpox matter. On the eighth day he
was free from indisposition." So far as the text is concerned, that is all. A
coloured plate is given of the boy's arm, representing a stage of the infection
probably later than the eighth day, although we are left to guess the date ; the
large, whitish vesicle has fallen in, there is evidently a sore of some depth
beneath the brown sloughing cuticle, and there is an angry, brick-red zone of
erysipelas for some distance around. If the child was free from indisposition
on the eighth day, it was only because the full force of the filthy infection
had still to be felt. A mere look at the collapsed vesicle in the picture will
satisfy any practised eye that sloughing ulceration was imminent, and the
brick-red colour of the skin around is equally ominous.
It is beyond all mere guessing, however, that the vesicle did become an ulcer ;
we know that, not from anything that Jenner himself ever disclosed, but from
what his biographer, Baron, who seems to have been a simple-minded enthusiast, inadvertently published
WANT OF SCIENTIFIC CANDOUR.
67
long after. In explaining and justifying the horse-grease hypothesis, Baron
printed from among Jenner's papers an enumeration of six points wherein
inoculated horse-grease resembled inoculated cowpox;1 one of the points was the
"disposition of John Baker's pustule to run into an ulcer." The same enumeration
had already been given by Jenner in his second pamphlet (April, 1799); but in
the six points, as Jenner had printed them from the copy, the reference to John
Baker's "pustule" is merely to its "progress and general appearance," the
original clause about the ulcer being conspicuously omitted. That authentic
evidence, then, will carry us beyond the eighth day of the case, when the child
was "free from indisposition."
There is no doubt that Jenner intends the narrative of this child's inoculation
with horse-sore virus to conclude with the reassuring statement that, on the
eighth day, he was free from indisposition. It is only in a footnote on a
subsequent page, inserted to explain why John Baker was not tested with smallpox
after being horse-greased, that we read : " the boy was rendered unfit for
inoculation from having felt the effects of a contagious fever in a workhouse
soon after the experiment was made." The child, it appears, was rendered unfit
for inoculation by unhappily becoming a corpse; he felt the effects of a
contagious fever, soon after the experiment was made, to some purpose, for he
died of it.
After a year's interval, Jenner wrote of John Baker's case without any
euphemisms such as "felt the effects
1 Baron, i. 248.
68
JENNER'S " INQUIRY."
of a fever." Having occasion to mention the case in a note in his next pamphlet,
he says, with simple inadvertence, that the boy "unfortunately died of a fever
at a parish workhouse" ; it is not even a "contagious fever." If the fever had
been typhus, or scarlatina, or measles, why did he not remove all ambiguity by
saying so? Reading between the lines, with the help of horse-grease pathology
and Jenner's own plate, we may safely conclude that this child of five, lent for
the experiment by poor parents under some cajolery or other, had an ulcerated or
sloughing arm from the virulent matter inserted into it, that he had erysipelas
(which is both a fever and contagious), that he was sent to the parish
workhouse, that he died there, and that this village tragedy was all enacted
within a period "soon after the experiment was made." Such is the one
experiment with horse-grease which Jenner introduced into the Inquiry, and such
is the candour of it.
On the same day (16th of March, 1798) that he inoculated horse-grease on one
child, he inoculated matter from a poxed cow's teats on another child. He will
have us believe that one of the three horse-greased stablemen, John Haynes,
carried the infection to the cows. The evidence is of the most flimsy kind ; no
exact dates are given, nor any full statement of the circumstances. We are
merely told that Haynes was daily employed as one of the milkers at the farm,
and that cowpox "began to show itself among the cows about ten days after he
first assisted in washing the mare's heels." Of course there may have been a
number of other things relevant to this outbreak of cowpox, but we are told
nothing more; we are not even told anything
COWPOX TRIED AGAIN. . 69
about the disease upon the fingers of Haynes, whether he caught it when he first
"assisted" in washing the mare's heels, or, as in every one of the cases (i.,
ix., and x.) of the Inquiry, only after the cows had become affected. The
concurrence of the two diseases at the particular farm probably meant that there
was no more care and cleanliness in the stable than in the cowhouse. Jenner
seems to have had a larger experience of these double events than any one else;
they reflect somewhat on the ignorance and slovenliness of Jenner's parish, but
they do not establish the origin of cowpox from horse-grease.
We come, then, to Jenner's actual experiments with virus from the cow's teats,
leaving the theory or reasoning as it stands :—
"William Summers, a child of five years and a half old, was inoculated the same
day with Baker, with matter taken from the nipples of one of the infected cows,
at the farm alluded to in page 35. He became indisposed on the sixth day,
vomited once, and felt the usual slight symptoms till the eighth day, when he
appeared perfectly well. The progress of the pustule, formed by the infection of
the virus, was similar to that noticed in case xvii. [James Phipps], with this
exception—its being free from the livid tint observed in that instance."
Here again the experimentee was perfectly well on the eighth day; but if the "progress of the pustule" was similar to that of James Phipps, the boy Summers
can hardly have been perfectly well during the days following the eighth. James
Phipps, as we have seen, had subsequent eschars, which meant deep ulcers, which
meant slow healing and a good deal of disturbed health for several weeks.
Ulceration of the arm has been the almost uniform experience with cowpox virus
direct
70
JENNER'S " INQUIRY."
from the cow's sore teats or from the milker's sore hands, as we shall see in
subsequent chapters.1 Jenner, who was something of an exquisite, spared his
readers these unsavoury details whenever he could ; only he will persist in
dropping hints about eschars and the like, when he might just as well have
suppressed the disagreeable facts altogether.
The child Summers ought to be even more famous than the child Phipps, because he
is the first vaccinifer on record. On the 28th of March, being the thirteenth
day of his infection, matter was taken from his arm and inoculated upon William
Pead, aged eight years. Again the narrative touches lightly on some of the
aspects of cowpox, while it emphasizes others :—
"On the sixth day he complained of pain in the axilla, and on the seventh was
affected with the common symptoms of a patient sickening with the smallpox from
inoculation, which did not terminate till the third day after the seizure. So
perfect was the similarity to the variolous fever, that I was induced to examine
the skin, conceiving there might have been some eruptions, but none appeared.
The efflorescent blush around the part punctured in the boy's arm was so truly
characteristic of that which appears on variolous inoculation, that I have given
a representation of it. The drawing was made when the pustule was beginning to
die away, and the areola retiring from the centre."
The "dying-away pustule" is still a big, whitish bleb with a fallen-in,
brownish centre ; it is quite probable, from the look of it, that it became an
ulcer, but of course Jenner dislikes mentioning things of that kind. We are told
of the fever or constitutional disturbance, which was safe neutral ground
whereon to make a comparison
1 See also my Natural History of Cowpox and Vaccinal Syphilis
(London, 1887),
chapters i. and v.
A SERIES OF VACCINATIONS.
71
with smallpox ; and about the efflorescent blush, which might also be common
ground in almost any inoculated infection of the kind. But of those features
wherein the infection was wholly unlike even the local pustule of inoculated
smallpox, we are told nothing.
From the arm of the boy Pead "several children and adults were inoculated" on
the 5th of April, or the ninth day. It is clear, from the text, that most of
these did badly, although we have no details ; but from one of them, Hannah Excell, a child of seven, matter was taken on the 12th April, or the eighth day,
and some of it inoculated upon four children, three of whom did badly (no
particulars), while the other, Mary James, whose vesicle "scabbed quickly
without any erysipelas," became the vaccinifer of J. Barge, a child of seven.
The date of Barge's vaccination is not given (nor indeed any other particular
information about the case); but it must have fallen between the 19th and 24th
April. On the latter date Jenner left Berkeley for London, taking with him his
MSS., his drawings, and a sample of vaccine lymph dried upon a quill, being part
of that which he had taken from Hannah Excell (third in order from the cow) on
the 12th of the same month.
He remained in London until the 14th of July, getting the
Inquiry printed, and
otherwise looking after the interests of his strange project. The preface of the
Inquiry bears the date of 21st June, so that we may assume that it was ready for
delivery at the end of that month, or early in July. Within a week or so of its
publication, Mr. Cline, surgeon to St. Thomas's Hospital, used the dried vaccine
matter, which Jenner had brought to town, for the inoculation of a boy with
hip-joint
72
JENNER'S " INQUIRY."
disease, having the ulterior purpose of turning the cow-pox sore over the hip
into an issue.
These are the facts, and this is how the biographer Baron moralizes upon them :
"It is a strange circumstance that the author of that practice, a man known in
the highest circles of medical science as worthy of all credit and as an
accurate and enlightened observer, should have been unable, notwithstanding the
proofs which his 'Inquiry' contained of the safety and importance of
vaccination, to prevail on one individual to submit to the operation during his
stay in London." It was, indeed, very natural that Cline and all Jenner's old
set should wait until they had seen the proofs which the Inquiry did contain.
They knew that the business had been discredited by the Royal Society the year
before, notwithstanding the strong interest that Jenner had with Banks and
others ; and they would have been told by Jenner, when he came to town to have
his essay printed on his own account, that it now contained important
additions, which might lead his old friends to take a more favourable view of it
after they had it in print with the three new coloured plates. Now, when Cline
wrote to Jenner on the 2nd August, to tell him of the result of the vaccination
in London, he carries the narrative of it to the nth day of the vesicle, to its
subsequent ulceration, to the testing inoculation with smallpox, and to the
effects of the latter for three days longer; so that the first trial of the
vaccine in London must have taken place not later than the middle of July, or
within a week or so of the publication of the Inquiry. It was on the 14th of
July that Jenner left London.
We have now brought the narrative of events down
THE GREAT QUESTION. 73
to the date of publication, and have anticipated one small fact in the reception
of Jenner's project by the medical profession. But, before we enter on the full
history of its reception, there still remains to consider the evidence which he
offered in the Inquiry, that cow-pox, whether caught accidentally or given
experimentally, did, as a matter of fact, anticipate and ward off the attack of
smallpox. It was upon that evidence, and the subsequent corroboration or
refutation of it, that the vaccination controversy mainly turned. The name of
Variolæ Vaccinæ
was accepted as proof enough that cowpox was a sort of smallpox
of the cow, the doctrine of the origin from horse-grease being passed over with
indifference by practical men. The questions that really interested people were
whether inoculation with the variolæ
vaccinæ, whatever that disease might be,
was as good a protection from smallpox as inoculation with variola itself;
whether it was unattended by a general eruption ; whether it was a milder and
safer disease than variola proper; and whether it was free from the great and
growing objection to the latter of being a source of aerial contagion. On two of
these questions Jenner was pretty safe to get a verdict; on the question of
protecting from smallpox he wanted all the ingenuity of his very imaginative
and unscrupulous mind to carry him through.
Jenner led off, at page 6 of the
Inquiry, with a bold statement, which his
medical neighbours knew very well to be untrue: "What renders the Cow Pox so
extremely singular is, that the person who has been thus affected is for ever
after secure from the infection of the Small Pox ; neither exposure to the
variolous
74 JENNER'S " INQUIRY."
effluvia, nor the insertion of the matter into the skin producing this
distemper. In support of so extraordinary a fact, I shall lay before my Reader
a great number of instances." But first the reader is treated to the
innocent-looking footnote about genuine cowpox and spurious, the full
significance and historical importance of which plea I shall deal with in
chapter 7.
Of the "great number of instances" of the variolous test, I have already
examined those that were in the original evidence prior to March, 1798. Jenner's
opportunities in that and the following month were really considerable ; and,
in so far as his variolous test was a valid test at all, it was much more to the
point to try it upon young vaccinated children than upon a number of old
cowpoxed milkers. We are loftily told, however, that it was superfluous, after
all that had been said, to try the variolous test upon each of the children whom
he had succeeded in infecting with cowpox: "After the many fruitless attempts
to give the Small Pox to those who had had the Cow Pox, it did not appear
necessary, nor was it convenient to me, to inoculate the whole of those who had
been the subjects of these late trials."
It was not convenient to Jenner, because he rushed off to London as soon as he
had made these few experiments on children, and without waiting to ask the
great question, whether they were, as a matter of fact, insusceptible of
smallpox inoculation, or what proportion of them were insusceptible. He
asserts, however, that the boy Summers, the first of his series, was tested with
smallpox and that "the system did not feel the effects of it in the smallest
degree" ; but he does not say when this was done, nor by whom, nor does he give
TESTING THE VACCINATED. 75
any other details. He tells us, further, that two other children, Pead and
Barge, were inoculated with smallpox by his assistant (after Jenner had gone on
his London visit), who wrote as follows : "On the second day the incisions were
inflamed, and there was a pale inflammatory stain around them. On the third day
these appearances were still increasing and their arms itched considerably. On
the fourth day the inflammation was evidently subsiding, and on the sixth it was
scarcely perceptible. No symptom of indisposition followed." This is not very
precise and determinate ; but, even if we admit that the variolous matter failed
of its usual effects upon children, we must bear in mind, not only that Jenner's
method for the variolous test was the bogus method of Sutton, but also that the
attempt was made at a time when the cowpox sores were quite recent, being
either in a state of scabbing, or filled by eschars, or in open ulceration, and
that any such active process on the skin, together with the clogging of the
absorbent glands by the inflammatory action of cowpox virus itself, would be a
sufficient hindrance to the full action of smallpox virus inserted near the same
spot, or a cause of irregularities, at least, in its evolution and extent.
We may now sum up the contents of the famous
Inquiry into the Causes and Effects
of the Variolœ; Vaccinœ, which Jenner published to the world in the end of
June, 1798. The programme of it was one thing, and the execution another.
Extremely vague and indeterminate notions were to give place to the results of "an inquiry as strict as local circumstances would admit"; so, at least, the
world was modestly told in the
76
JENNER'S " INQUIRY."
preface. In the text, the unblushing invention of the misleading name of
Variolae Vaccinæ is never once reverted to ; the novelty, which none knew to be
a novelty, is on the title-page and in the short title of the fly-leaf, but
elsewhere it is passed over in discreet silence. The proofs that there existed
both a genuine cowpox and a spurious, and that the former came from horse-grease
while the latter was spontaneous, were both disingenuous in motive and puerile
in effect. The proof of the main thesis, the protection from smallpox, was
disgracefully scamped, even assuming that experiments were valid for proof. The
average experience of Gloucestershire milkers was ignored, Jenner being well
aware that there were quite as many instances telling against protection as
there were in favour of that popular fancy ; only such cases as supported the
notion were adduced, and these were set forth in such loose and meagre fashion
as to be worthless according to any strict standard of evidence. Of all the
children vaccinated by Jenner, only one was subjected by himself to the
variolous test, the result being stated in evasive or ambiguous language. He
rushed off to London to publish his Inquiry, without waiting to see whether his
vaccinations of March and April, 1798, would stand the test, such as it was :
only two, or perhaps three, of them were subsequently smallpoxed by his
assistant. The test used and recommended was the bogus method of Sutton. Lastly,
the similarity of cowpox to smallpox is craftily implied, not in regard to the
vesicle and pustule respectively, but in regard to the constitutional
disturbance and the efflorescence ; while the ulcerous course of the cowpox
infection beyond its
CHARACTER OF THE " INQUIRY."
77
vesicular stage, which would have put all affinity to smallpox out of the
question and would have inevitably suggested the pox proper, was systematically
suppressed. The same suppression was practised in the case of the child whom
Jenner inoculated with virus from a horse-sore on a stableman's hand.
It has to be kept in mind that Jenner's contemporaries had not the means which
we now have of detecting all this laxity and dishonesty in the form and matter
of the Inquiry. In considering what reception they gave to the book and to the
project, we must endeavour to put ourselves in their place.
CHAPTER 4.
THE RECEPTION OF THE " INQUIRY."
" BEFORE the publication of Dr. Jenner's treatise," writes Denman, a
leading physician of the time, "the cowpox was unknown, even by name, to the
generality of physicians in the kingdom." 1 When they did come to hear of the
disease, it was under the name of Variolae Vaccinae (smallpox of the cow), which
Jenner had thought fit to give to it for reasons best known to himself. The name
was accepted in good faith by the profession in all countries. The first French
writers uniformly spoke of the new disease as petite verole des vaches; the
Germans at once adopted the synonyms Kuhblattern and Schutzblattern ("cow-smallpox" and "protective smallpox") ; and in Italy it was called
vajulo
vaccino ("vaccinal smallpox "). These terms were gradually superseded by the
new word vaccine, introduced at Geneva in 1799, which simply meant something
pertaining to a cow, and carried no suggestion of disease in general, or of a
pox-disease in particular. In colloquial English speech, cowpox continued in use
for some time, and was then changed into cow pock. A reason for the change
was given by
1 Med. and Phys. Journ., iii.
(1800), p. 292.
"SMALLPOX OF THE COW" ACCEPTED. 79
a London surgeon, in the preface to an account of a notorious series of vaccinal
ulcers at Clapham :1 he says that he prefers cow
pock, "as I conceive the word
'pox' to be inapplicable, being the exclusive appellation of syphilitic
affections." Not exclusive ; for usage in the western counties had given the
name of pox to the loathsome affection of the cow's teats for generations past.
The same unwarrantable liberty had been taken with the old English name by a
German writer shortly before, on the ground that pock was a "milder and more
convenient" name than pox.2 In the United States, the liberty first taken with
cowpox was to make it kine pox, as being "more delicate" ;3 and, shortly
after, kine pox became kine pock, which was doubtless more delicate still.
If it should be said that these changes in an old name were not Jenner's doing,
that he was not responsible for them, and that the leading title of the
Inquiry, Variolae Vaccinae, was not put there with any such deliberate purpose
as I have asserted, those who so contend are invited to follow closely what was
said by critics of the Inquiry, and what Jenner said, or caused to be said, in
reply. Having found that the name on his title-page was adopted without
suspicion, Jenner used it ostentatiously in the text of his second essay,
although it is not used at all in the text of the first. He took some pains to
secure its currency, and jealously watched any reference to his innovation in
the naming
1 Pears, Lond. Med. Rev., Jan., 1801, p. 276.
2
Neues Hannovrisches Magaz., 1800, p. 58.
3 Waterhouse,
History of the Variolœ Vaccinœ, etc. Boston, U. S.,
1800,
80 THE RECEPTION OF THE "INQUIRY."
of the disease. The earliest public friend of Jenner's project was Dr. George
Pearson, F.R.S., physician to St. George's Hospital, a scholar, and an
honourable if not a very clear-headed man. His Inquiry concerning the History of
the Cowpox1 followed Jenner's in less than six months, and endorsed it. Pearson,
however, was getting dangerously "warm " on more than one side of the
mystification ; in particular his "Remarks upon the use of the term Variolae Vaccinae" were such as Jenner could not but read with alarm. Pearson's objection
to the Latin name was of the mildly grammatical kind; variolae
vaccinae?, or
smallpox of the cow, he opined, was a catachresis of speech, as if one were to
speak of the plumage of a bear ; for it was not ascertained that the cow, or the
bovine species, was subject to variolous disease at all.
In his private correspondence Jenner wrote with some asperity about Pearson's
exceedingly mild objection to the name; and for public purposes he put forward
his clerical neighbour, the Rev. T. D. Fosbroke, to overbear all such
inconvenient remarks by a prodigious display of philological and other
learning. The clerical scholar wrote as follows in reply to Pearson, signing
himself "T. D. Fosbroke, Vacco-variolist":2 " Every schoolboy knows that the
meaning of variola is 'freckle' or 'pimple,' and therefore that its modern
and forced application to smallpox by no means destroys its original latitude
of signification, and indeed real and only one ; and, of course, that it may be
therefore allowably so used. The Latins knew nothing about
1 London, 1798 (November).
2 Lond. Med. Rev., ii. 482,
THE NEW NAME DEFENDED.
81
smallpox ; how, therefore, could they appropriate the term to the disease in
question ?"
This rubbish was allowed to pass in the medical journal which was specially set
apart for the work of criticism ; no one replied, or was permitted to reply,
that variola, in its technical sense, ever since the middle ages had meant
smallpox, and nothing but smallpox, and that cowpox blebs or crusts or sores or
ulcerations were neither pimples nor freckles. A "vacco-variolist " also came
forward about the same time in the columns of the Gentleman's Magazine;l
and a
second time in the Medical Review2 to contradict a London physician (Dr.
Hooper), who had pointed out that milkers' cowpox sores were larger than the
pustules of smallpox and otherwise unlike them, Jenner's advocate taking care to
parade the term "vacco-variolism" and to denounce the "malignancy " of
objectors.
It must seem strange to any one who reads Pearson's Inquiry now that it should
not have sufficed at the time to show up the artifice of Jenner in re-naming
cowpox "variolæ
vaccinæ," or smallpox of the cow. Pearson made out very
clearly, by the evidence which he collected, that the milkers' cowpox took the
form of "painful phagedenic sores," often lasting for weeks or months, which
pointed to cowpox being a pox in the classical sense of the word. But he was too
much captivated by the idea of a substitute for variolation to read the true
lesson of these facts. In August of the year following (1799) he had progressed
so far in his easy-going assent to Jenner's teaching that he practi-
1 1799, ii. 664. 2
August, 1799.
82 THE RECEPTION OF THE "INQUIRY."
cally withdrew his objection to the namevariolæ
vaccinæ, which "I formerly
endeavoured to show to be unjust and tending to mislead by giving erroneous
notions." Pearson's final view seems to have been that cowpox and smallpox were
"varieties of the same species" ; but he never quite lost his early
impression of their unlikeness. When the Clapham cases of vaccinal ulcers were making a
stir in 1800, he wrote l that cowpox might indeed have something loathsome in
its nature, but then it was "useful" ; it was one of those
things
"Which, like the toad, ugly and venomous, Wears yet a precious jewel in his
head."
Another London physician of repute, who got dangerously ''warm" on the side
of the new name and old nature of cowpox, was Dr. John Sims, a man of liberal
tastes, who edited the Botanical Magazine for many years. Sims, in the innocence
of his heart, thought that any information on the nature of cowpox would be
welcomed. Accordingly he gave an account, in the very first number of the new
London medical journal2 (13th February, 1799), of the case of Mr. Jacobs, a
prominent solicitor of Bristol, who had begun life in the humble position of a
milker on his father's farm; and had twice caught cowpox on his hands. Mr.
Jacobs was perhaps the only one of the large number of cow-poxed milkers who
could now make himself heard in the learned world on a matter of vulgar
experience, which had assumed a sudden and wholly unlooked-for importance. "What this gentleman remarks," wrote
1 Med. and Phys. Journ., v. 87.
2 Ibid., i. p. 11.
LIGHT FROM OTHER SOURCES.
83
Sims, "of the loathsomeness of the disease, although a circumstance entirely
overlooked in Dr. Jenner's account, appears to be in itself a formidable
objection to its introduction," not to mention the fact that Jacobs had twice
taken smallpox afterwards. When Jenner read this, he wrote to a friend,1 calling
Sims a "snarling fellow," and accusing him of "harsh and unjustifiable
language." Private remonstrances were made to Sims, and he wrote again on the
20th April, that Jenner's doctrine would appear to have been based upon "suitable inquiries." A paragraph in the same number announces that Sims had
acknowledged the Bristol case to be "spurious." In a year's time Sims had
progressed so far as to let his name appear near the top of the list of
metropolitan physicians and surgeons who recommended cowpoxing to the public.2
The veterinary criticism, also, was highly inconvenient. That of Clayton, the
Gloucester veterinary surgeon, has been given at length in the foregoing
chapter; two other testimonies of the same kind have now to be noticed. A
well-known entertaining writer on veterinary and rural subjects was John
Lawrence, of Bury St. Edmunds, the author of a Philosophical and Practical
Treatise on Horses and on the Moral Duties of Man towards the Brute Creation,
and of other works. Lawrence promptly came forward to tell what he knew of
cowpox in the eastern counties. "When the public ardour for the present
topic," he wrote,3 " shall have
1 Letter to Gardner, 7th March,
1799, in Baron, i. 321.
2 July, 1800.
3
Med. and Phys. Journ., i. 114.
84 THE RECEPTION OF THE "INQUIRY."
become a little cool and satisfied, I hope it will be turned by enlightened men
towards another perhaps of nearly as great consequence, namely the prevention of
the original malady in the animals themselves. Those who have witnessed, or only
reflected upon the excessive filth and nastiness which must unavoidably mix with
the milk in an infected dairy of cows, will surely join me in that sentiment."
Lawrence was hopelessly before his time ; it was not likely that any one would
listen to a person so absurdly Quixotic as to propose that cowpox, the source of
Jenner's "guardian fluid," should actually be eradicated from among the diseases
of the brutes. It was not until 1886-88 that we began to find out that "the
filth and nastiness which must unavoidably mix with the milk in an infected
dairy of cows" was a not uncommon cause of scarlet fever in those who used the
milk.
Another criticism of cowpox, from the cows' side of the question, was published
soon after in an anonymous pamphlet.1 The author begins with some cautions to
milkers not to handle the teats of cows too roughly, and then proceeds to
inquire a little farther into the nature and extent of "this most horrible
contagion." These filthy ulcers, he points out, never arise except on the teats
of a cow in milk ; there is no such disease of the bull, the ox, the maiden
heifer, or the calf; the disease was, in fact, incidental to the "stripping" of
the teats by the hands of milkers. This bold rationalist objected altogether to
inoculating disease in order to ward off
1 A Conscious View of Circumstances and Proceedings respecting Vaccine
Inoculation. London, 1800.
OBJECTORS SILENCED. 85
disease; smallpox was subject to the same laws as the plague and the sweating
sickness, which had had their day in England. The author of the Conscious View
was severely handled by the medical critics. One journal gave him half a dozen
contemptuous lines :l "It is impossible for a candid mind to read this
illiberal and, we may say, scurrilous pamphlet without feeling the most lively
indignation." The other and more critical London organ gave a full summary of
the essay, and concluded that it was written with too much acrimony and
prejudice to have any influence on the practice of cowpoxing, which was by that
time in full swing.3 It does not appear who this anonymous writer was. His line
is much the same as that taken by Lawrence, except that the latter was not
wholly opposed to the old variolous inoculation.
The realities of cowpox and the utter unlikeness of it to smallpox were also
dwelt upon by Moseley and others ; but as these opponents were destined to carry
on a long warfare against the Jennerian project, I shall put off what I have to
say of them until chapter 13. on Dissent.
The most formidable of Jenner's antagonists, judged by scientific or
professional standing, was Dr. Ingen-housz, of Vienna, who happened to be
residing in England when the Inquiry was published.
Dr. John Ingen-housz, born at Breda in 1730, came to England in his youth and
learned the art of inoculat-
1 Med. and Phys. Journ., iv. 567.
2
London Medical Review, v. I have had to depend on the
extracts from the pamphlet given by this Review, as the original
is not to be found in libraries.
86
THE RECEPTION OF THE "INQUIRY."
ing smallpox under Dimsdale. On the recommendation of Sir John Pringle, he was
summoned in 1768 to the court of Vienna by the Empress Maria Theresa, who had
shortly before lost two of her children by the smallpox. After an obstinate
struggle with his countryman, De Haen, who was then all-powerful in the Vienna
medical school, he succeeded in introducing inoculation into Austria and devoted
a great part of his energies to it in after years. He excelled, at the same
time, as a botanist, chemist, and physicist, and his name will be found
honourably mentioned in the history of vegetable physiology and of electricity.
His Miscellanea Physico-medica was well known both in German and Latin editions.
In the autumn of 1798, being then in his seventieth year, he came on a visit to
the Marquis of Lansdowne at Bowood. Jenner's Inquiry, which was just out, came
naturally under the notice of so leading an authority on smallpox inoculation ;
and he took advantage of his residence in Wiltshire to make inquiries about the
"extraordinary doctrine" of protection by cowpox, as he knew that the cowpox
was well known in that county. He first applied to Mr. Alsop, surgeon, of Calne,
and was taken by him to a farmer of the neighbourhood named Stiles, who had
seen the cowpox go through the cows in his father's time thirty years before,
and had himself caught the infection in a very severe form; when his cowpox
sores were all healed, he had been inoculated with smallpox by Mr. Alsop ; the
disease was produced, many pustules came out, and he gave the smallpox to his
father, who died of it. This was the information elicited by Ingen-housz on the
very
DR. INGEN-HOUSZ.
87
first attempt. He heard of several other facts of a similar kind, which tended
to overthrow Jenner's idea of protection. He advises Jenner to think it over
"before you finally decide in favour of a doctrine which may do great mischief
should it prove erroneous." He prefers to approach Jenner privately rather than
to draw him into a public controversy, "always disagreeable to a man so
liberal-minded and well-intentioned as your treatise indicates you to be."
Ingen-housz himself gave Jenner the cue for his reply. The famous inoculator of
Vienna had noticed in passing the digression in the Inquiry about smallpox virus
losing its properties, owing to some subtle imaginary putrefactive change, and
producing a disease which was "certainly not smallpox," although it had all the
look of it: it was not smallpox, because those who had been thus inoculated
caught the smallpox naturally afterwards. No sensible and honourable man could
endorse stuff of that kind, however much he might wish to excuse the failures of
his own art. Spurious smallpox was afterwards disclaimed by Pearson, Woodville,
and other inoculators who knew their business. It was a point which Ingen-housz
could not let pass, and he tells Jenner that if he will inquire more
particularly, he will find that he is in error in setting up a spurious variety
of smallpox ; there was no such thing known. Whether from mere momentary
irritation or from deliberate design, Jenner answered Ingen-housz by extending
the accusation of spuriousness to those very cases of cowpox which the Viennese
doctor had heard of in Wilts. There was an offensive stench from the cows'
udders, therefore the putrefactive process had been going on;
88
THE RECEPTION OF THE "INQUIRY."
therefore the cowpox was spurious, and no wonder Farmer Stiles had taken
smallpox after it.1 Hitherto spurious cowpox, in Jenner's estimation, had been
such varieties of it as did not come from horse-grease ; the necessity of
replying to Ingen-housz showed him how to extend the domain of the spurious,
which he did still arther in his next essay. As Ingen-housz had the temerity to
object to Jenner's spurious smallpox, that worthy, whom no one would have
accepted as an authority upon smallpox, replied not only by re-affirming his
statement, but by throwing spurious cowpox also at his adversary's head. The
spuriousness in both cases had no other ground than the failure to ward off
smallpox. Jenner did not allege that there was anything in the look of the one
disease or of the other by which its "spurious" character might be known.
Jenner's spuriousness, in the language of metaphysics, was a subjective, not an
objective quality.
A man of the world, as Ingen-housz was, must have very quickly seen that there
was no use controverting the arguments of such a person as this, who was
palpably either a fool or a knave. He told an emissary of Jenner's, a surgeon, Paytherus, who called upon him in London on the 13th December, 1798, that
"nothing would have kept him from answering Dr. Jenner's letters but the desire
of satisfying his mind on the subject." He also "spoke very handsomely" of
Jenner,
1 One of the cases published by Abernethy for the Rev. R. Holt, of Finmere, was
of a servant so dangerously ill with cowpox ulcerations that medical help was
necessary for more than three weeks, the effluvia being so offensive as to
penetrate every room in the house.—Med. Phys. Journ., ii. 401.
THE OPINION OF BEDDOES. 89
and sent him the advice to be in no hurry to publish a second time on the
cowpox. He took no farther part in the controversy, and died during his next
visit to Bowood in September of the year following (1799).
The impression made by Jenner's book upon leading medical men throughout the
country was a somewhat mixed one. Beddoes, of Bristol, told one of his
colleagues, who was a friend of Jenner's, that he thought the Inquiry would do
its author much credit;1 but in writing about the same time to Hufeland, of
Berlin, he spoke disparagingly of it.
The letter is worth quoting as an instance of the kind of criticism current just
before Woodville came to the rescue :2—
"You know Dr. Jenner's experiments with the cow-pox. His idea of the origin of
the virus appears to be quite unproved, and the facts which I have collected are
not favourable to his opinion that the cowpox gives complete immunity from the
natural infection of smallpox. Moreover the cowpox matter produces foul ulcers,
and in that respect is a worse disease than the mildly inoculated smallpox. With
all this suppuration, the system remains on the whole unaffected ; accordingly
nothing is gained thereby for the smallpox. They are occupied at present with
experiments upon it at the Smallpox Hospital in London."
Percival, of Manchester, congratulated Jenner on his publication, and went on to
say:3 "But a larger induc-
1 Hicks to Jenner, 3rd October, 1798, in Baron, i.
2 Beddoes to Hufeland, 25th
February, 1799, in Hufeland's
Journal, vii. (1799), pt. iii. p. 168.
3 Letter to Jenner, 20th November, 1798, in Baron, i.
90 THE RECEPTION OF THE "INQUIRY."
tion is yet necessary to evince that the virus of the variolcœ vaccincœ [he had
clearly no suspicion of the name] renders the person who has been affected with
it secure during the whole of life from the infection of smallpox."
Francis Knight, a court surgeon in fashionable London practice, who
was connected with Gloucestershire, wrote, on the
10th September, 1798, that
the plates were correct, and that he "knew the facts to be well supported : at
least it was a general opinion among the dairymen that those who had received
the cowpox were not susceptible of the variolous disease. . . . It is sufficient
for me to have proof that a lighter disease may be uniformly substituted for a
greater one." And, to show his confidence in the discovery, he asks for a supply
of lymph, adding: "I know some people of fashion who are well disposed to let me
make the experiment on some of their children."
It never for a moment occurred to Knight to suppose that
Jenner was not then
practising his new method, or that he had not as much matter for inoculation as
he cared to use. An intimate friend of Jenner's, Dr. Hicks, of Bristol, was
equally in the dark. Writing on the 3rd October (three months after the Inquiry
was published), he says : " I do not see that you need hesitate to accept of the
invitation given you to inoculate with the cowpox, convinced as you are that it
will secure the person so inoculated from ever being infected with the
smallpox." Jenner was "hesitating" for reasons that have now to be made clear.
When he came to London in April to publish the
Inquiry, he left his series of
vaccinated cases in the
JENNER HAS NO LYMPH.
91
hands of his nephew and assistant, who would seem not to have carried the
succession farther. Jenner took a sample of cowpox matter with him, and gave it
to Cline, who produced an ulcer with it in his first case, and failed altogether
at the next remove. Cline then wrote to Jenner for a fresh supply of cowpox,
never dreaming that there was any lack of it. He sent a handsome testimony of
his own and Dr. Lister's belief in the new protective, along with the account of
his trial of it. When Jenner afterwards used that letter, he struck out Cline's
words, "The ulcer was not large enough to contain a pea, therefore I have not
converted it into an issue as I intended," and inserted in their place the
words, " There were no eruptions." 1
When Jenner went back to Gloucestershire in July, he heard of the prevalence of
cowpox at a farm near Berkeley, and inoculated four or five of the farm
servants with matter from a cow's teat. These inoculations, which were in
adults, all failed ; but, within a month, the same servants acquired cowpox
accidentally from milking the infected cows. The accidental sores on their hands
were, of course, a perfectly available source of matter, but Jenner does not say
that he resorted to it. In September, Dr. Pearson was urging him to begin the
practice in earnest, and Jenner excused his want of cowpox matter by blaming
Cline for failing to continue the old April stock in London.
In the end of September cowpox appeared in a dairy
1 Cline's original letter was published by Baron (i. 152), who does not seem to
have known that Jenner had already used it— and tampered with it.
92 THE RECEPTION OF THE "INQUIRY."
at the village of Stonehouse, on the Stroud road, not far from Eastington, where
his friend Mr. Hicks had a factory. Hicks knew all the circumstances of the
publication of the Inquiry, and was ready to have his own two children
inoculated in the new way. It would seem that no word of the cowpox at Stonehouse had reached him until after it had been prevalent several weeks ; for
it was not until 26th November that Jenner procured some of the matter, and next
day inoculated with it the two Hicks children. The result is indicated vaguely
in a letter to Woodville : an inflammation in the arms, the constitution
unaffected, the local effects lasting more than a week, a small scab left
behind. On the 2nd of December, a portion of the same lymph which had been dried
upon a quill was inserted into the arm of Susan Phipps, a child of seven. On the
twelfth day the areola was out, and there were a number of very minute confluent
pustules round the big cowpox vesicle. "So exact was the resemblance of the arm
at this stage to the general appearance of the inoculated smallpox," that Drake,
a surgeon from Stroud, who had never seen the cowpox before, declared he could
not perceive any difference between it and smallpox. However, Drake took some
matter from the child's arm and inoculated some cases of his own, with a result,
as we shall see, that must have opened his eyes to the difference between
cowpox and smallpox.
The utter unlikeness of cowpox to smallpox, and its singular generic resemblance
to the great pox, became obvious in Jenner's own case in a few days ; the
vesicle dried to a crust, the crust was cast off, and disclosed an ulcer, which
continued to spread until it reached a size
A CANDID OBSERVER. 93
"nearly as large as a shilling"—not very like smallpox, one would suppose. With
matter which had been taken from Susan Phipps' arm on the twelfth day, Jenner
inoculated Mary Hearn, aged twelve. She had the areola on the fourteenth day,
and an ulcerous state of the arm for some time after, which had to be treated
with mercurial ointment. These facts are given by Jenner himself, although he
prefers to call the ulcer a "pustule."
It so happened that Thornton, of Stroud, got matter from the same Stonehouse
farm on the 1st of December independently of Jenner ; and both he and Hughes, of
Stroud, who reported Drake's cases done with matter from the arm of Jenner's
case on the 13th December, have left full narratives of their experience. These
are in striking contrast to Jenner's ordinary equivocal and secretive manner in
reporting his results. If vaccination at the outset had been left in the hands
of men as candid as Thornton and Hughes, the public and the profession would
have declined to adopt it; the immediate results were too uniformly alarming for
the vaccinated children, and the subsequent test too adverse to the theory of
protection from smallpox.
Thornton's experience is historically important as being the first independent
evidence that the Inquiry elicited. On the 1st of December, 1798, he found a
milker at the Stonehouse farm, with sores upon his hands ; one of these was
still in the unbroken form of a pock, being "the only one that was not
degenerated into a sordid and painful ulcer." The vesicles were seen first on
the fingers five days before, having been preceded by pain in the axilla,
headache, cold shiverings,
94 THE RECEPTION OF THE "INQUIRY."
fever and weakness. The same evening, on which he took the cowpox matter from
the milker, Thornton went to Stafford's Mill and inoculated Mr. Stanton and four
of his children, from ten years of age to ten months. On the third day the arms
of the four children were affected with a kind of erysipelatous efflorescence
above the point of insertion. About a fortnight after, the punctures began to be
covered with a thick crust, from which some ichor was discharged for several
days. The inflammation subsided and the scabs fell off about the twentieth day.
" From the long-continued local excitement," Mr. Thornton began to hope that
the virus might imperceptibly have crept into the habit and proved a security
against the variolous infection ; but it was not so, for when they were tried to
see whether the cowpox had made them insusceptible, all the children "received
the infection and passed through the stages in the usual slight manner"; the
father, whose vaccination had failed altogether, was the only one of the five
who resisted the smallpox.
This damning experience of cowpoxing, from a source used by Jenner himself and
authenticated with full particulars, ought to have raised a suspicion that there
was something wrong. It was communicated to Jenner by Beddoes, in whose
Contributions to Physical and Medical Knowledge it was about to appear ; and
Jenner replied to it, and to the equally damning veterinary experience of
Clayton, of Gloucester, which was sent to him at the same time, by a bouncing
declaration of his own superior credit as a man of science.1
1 See chapter iii. p. 58.
INDEPENDENT INQUIRY AT STROUD.
95
There remained, however, the other experience at Stroud, with cowpox matter
taken by Jenner himself from the child vaccinated from the Stonehouse cows, and
given by him to Drake on the 13th December. Drake sent the results of the five
vaccinations and subsequent smallpox tests to Jenner shortly after ; but the
facts were suppressed, and nothing would ever have been heard of them but for
the following circumstances : The subjects offered for vaccination were the
three young children of the Rev. Mr. Colborne, of Stroud, a lad in his
employment, and another lad employed by Mr. Drake. Mr. and Mrs. Colborne
requested another Stroud doctor, Hughes, who was a connexion of the family, to
witness the operations by Drake and to follow the results. Hughes wrote out a
tolerably full account of the five cases, from notes that he had taken, and sent
it, under the date of 9th May, 1799, to Jenner, who forwarded it to the Medical
and Physical Journal, with the explanation that it had arrived too late for him
to include in his second pamphlet. But he had already been told the main facts
by Drake ; and in the second pamphlet he had deliberately omitted all reference
to them, merely stating that "Mr. D------ , a neighbouring surgeon," had
taken some matter from the arm of the child on 13th December. The trial,
however, had made some noise in Stroud, Gloucester, and Bristol, and it would
have been too risky for Jenner to have suppressed the second and fuller relation
of facts by Hughes, as he had already done the more summary statement of failure
by Drake. We now come to the cases as narrated by Hughes.
In three of them, a lad aged seventeen and two of the Colborne children (one
four years, the other fifteen months), the covvpox
96
THE RECEPTION OF THE "INQUIRY."
vesicles came to early maturity and were scabbed under the usual time. The lad
was inoculated with smallpox on the 20th December, being the eighth day from
his vaccination, and the two children on the 21st, being again the eighth day.
They all developed smallpox, both the local pustule and the general eruption
with fever. The remaining two cases—a lad aged fifteen and the third Colborne
child aged two years and a half—were also variolated on the 21st December, or
the eighth day of their vaccination ; but these two developed the local
pustules only. The reason why they did not have the consecutive fever and
general eruption of smallpox will perhaps appear from the peculiar history of
their cowpox sores.
In the lad, W. King, the areola appeared on the tenth day and continued
spreading until the fifteenth. On the eighteenth day the scab, which now
occupied the centre of the vesicle, put on the appearance of an eschar, with
much induration of the tissues around ; on the twenty-ninth day the eschar
separated, and left a sore one-quarter of an inch deep, which, under treatment
with mercurial ointment, filled up and skinned over in due course. He had
meanwhile been tried a second time with smallpox, on the 1st of January, but
resisted it entirely, his cowpox sore being on that day and for a week longer in
its eschar stage and his lymphatics doubtless clogged. The case of the child E.
Colborne was somewhat similar. On the tenth day her cowpox vesicle was the size
of a sixpenny-piece, being mostly a scab with a narrow ring round the margin
containing matter. On the fifteenth day the crust was thrown off, and left a
small superficial eschar, which increased in depth in the next few days ; much
inflammation followed in the skin around, and " two small suppurations " broke
out a little above the original vaccine puncture, each of which reached the size
of a shilling, one of them communicating with the original sore. On the 4th of
February, being the fifty-second day from vaccination, the sores were all healed
and the induration gone. Meanwhile this child had also been tried a second time
with smallpox on the 1st of January, entirely without effect.
It was a not incorrect summary of this experiment which had reached Jenner :
"Two of them had alarming ulcerations on their arms, and these two, whose arms
A CHECK TO THE PROJECT. 97
were so dreadfully affected, did not take the smallpox, while the other three
received it."
At the end of 1798, or six months after the Inquiry was published, the case for cowpoxing as a substitute for inoculation with smallpox stood as follows: Nearly
all the children's arms had ulcerated, some of them to an alarming extent, just
as the milkers' hands nearly always ulcerated. Jenner neglected the variolous
test in some of his cases, and got a rather equivocal result in others. The
variolous test, when applied by Drake and Hughes in one set of cases, and by
Thornton in another, gave a result which was as far as possible from bearing out
Jenner's confident assurances. In some medical circles these adverse facts were
as well known then as they are now to us in the retrospect; and it is the
strongest possible evidence of the good-will, nay, the welcome, extended to
Jenner and his innovation, that the fatal objections were not pressed.
Ulceration was so clearly written in the December experiments, both in Jenner's
own hands and in the hands of Thornton and Drake at Stroud, that the artifice of the title-page, the foisted name Variolæ Vaccinæ, (looked as if it were
going to be found out. It was probably thought imprudent to continue a stock
of matter from the ulcerating Stonehouse source, or perhaps the attempt to
continue it failed, as all Jenner's (attempts to raise a stock had failed. At
all events, neither Jenner himself nor the two surgeons at Stroud had any
matter to go on with ; and the great cowpox project might have come to an end
there and then if it had rested with Jenner to give practical effect to it.
At this point in the history of the substitution of cowpox
98 THE RECEPTION OF THE "INQUIRY."
for smallpox inoculation, the end of 1798, the scene changes from
Gloucestershire to London. Jenner had made at least two attempts, subsequent to
the publication of the Inquiry, to raise a stock of cowpox matter on the human
arm, and had failed ; so that he was unable to supply those who applied to him.
The most urgent of his correspondents was Dr. George Pearson, who had entered
into the question far more methodically, but not less confidingly, than Jenner
himself. The results of his numerous inquiries by correspondence all over the
country, and of his own investigation among the London dairies, were published
in November, 1798.
In consequence of Pearson's bustling zeal, the dairymen in London were induced
to report any cases of the pox among their cows ; and on Sunday, the 20th of
January, 1799, the news was brought to Woodville that the disease was among the
cows at a dairy in Gray's Inn Lane. On Monday, Woodville repaired thither along
with a veterinary student, who belonged to Jenner's parish and professed to know
about cowpox. In a day or two the milkmaids had the blebs on their fingers,
exactly as Jenner had figured in his first plate. The original sceptics and
rejectors of Jenner's innovation, Sir Joseph Banks, Lord Somerville and others,
were fetched to the cowhouse, and Jenner's book was produced. Scepticism gave
way to belief; for there, sure enough, was the identical large bluish-white
vesicle on a milkmaid's hand which Jenner had pictured—indeed, "a more
beautiful specimen of the disease than that which you have represented in the
first plate." Having satisfied themselves that there was such a malady as
cowpox, and that Jenner's picture of it in milkers was true to
WOODVILLE TO THE RESCUE. 99
nature, they concluded that there was a prima-facie case for giving it an
independent trial. No body of Englishmen would have acted otherwise ; whatever
the irrationality or dialectical absurdity of the project, they would put it to
an experimental test.
Matter was at once taken to the Inoculation Hospital, and a number of the
applicants at that institution had it inserted into their arms, instead of the
smallpox matter which they had come to receive. The succession of inoculations
was kept up from arm to arm, and vaccination was established on the grand scale.
From that perennial source Jenner himself was supplied with matter on the 15th
February, and thenceforward circulated it as the "true Jennerian lymph."1 It
was just at this juncture that Jenner got the proof sheets from Beddoes of the
damaging experiences of the Gloucester veterinarian and of the Stroud doctor;
and it is no wonder that he replied (26th February): "I have neither the
leisure nor inclination at the present moment to enter into an examination of
their arguments." Cow-poxing was now a going concern, and all the theoretical
objections in the world could not bring it to a stop.
Woodville had come to the rescue with his
solvitur ambulando. Nothing is more
striking than the effect that this practical solution of the question had upon
objectors ; within a few months they either withdrew and apologised for their
scepticism, or they kept silent. In the month of June, 1799, within three months
of the first diffusion of lymph and within a year of Jenner's first publication,
the editor of the Medical and Physical
1 See Natural History of Cowpox, pp. 18-21.
100 THE RECEPTION OF THE "INQUIRY."
Journal wrote: " There is not, perhaps, in the annals of medicine, to be found
an example of an experiment or inquiry where the life and health of such numbers
already born, and of all to be born, were implicated, that has been taken up
more generally, received more candidly, or conducted more prudently than this
concerning cowpox."
But Woodville did not merely supply a stock of lymph for all and sundry, learned
and simple, to try their hand with ; he succeeded, by a mixture of luck and
skill, in presenting cowpox to the profession in the subdued form which it has
ever since retained in average practice, a form which surprised Jenner when he
saw it, and was indeed very unlike the original ulcerous disease. The latter
achievement, along with the actual supply of cowpox matter for all who wanted to
try it, gave the new substitute for smallpox an irresistible vogue. Omne tulit
punctum may be said of Woodville : he provided vaccine lymph, while Jenner was
still talking about it; and he made the lymph comparatively innocuous, while
Jenner was still floundering in the difficulties of erysipelas and phagedenic
ulceration. We have now to see how cowpox came to acquire the rather mild type
which it had when the profession and the public first made trial of it and
accepted it.
CHAPTER
5.
COWPOX MADE MILD AND ACCEPTABLE.
DR. WILLIAM WOODVILLE, who started cow-poxing on the great scale and supplied all
the world with vaccine lymph, was one of the most practised inoculators of his
time. He had been a favourite pupil of Cullen at Edinburgh, and had come to
London after trying country practice for a few years. In 1791 he was elected
physician to the Smallpox and Inoculation Hospitals. He was a botanist of no
small repute, having published a Medical Botany in three quarto volumes in 1790
(subsequently edited by Sir W. J. Hooker), and laid out two acres of ground
around the Smallpox Hospital (then at King's Cross) as a botanical garden, which
he maintained at his own expense.
In 1796 he published the first volume of a
History of the Inoculation of the
Small-pox in Great Britain, in which he has the following remarks (p. 7) on
cowpox: "It has been conjectured that the Small Pox might have been derived
from some disease of brute animals; and if it be true that the mange, affecting
dogs, can communicate a species of itch to man ; or, that a person, having
received a certain disorder from handling the teats of cows, is thereby
rendered insensible to variolous infection ever afterwards, as some have
asserted, then
102 C0WP0X MADE MILD AND ACCEPTABLE.
indeed the conjecture is not improbable." This was either taken from the
paragraph in almost identical terms in Adams on Morbid Poisons, published the
year before, or was derived from the same source ; namely, Jenner's private
correspondence with Cline. Pearson speaks of Jenner's Inquiry as having been
long expected ; the rumour of its main contention, that cow-pox protected from
smallpox, had reached Adams, Beddoes, Woodville and others two or three years
before the essay appeared. The proposed substitute for variolous protective
inoculation would thus have caused a flutter among all the specialist
inoculators, determining some of them perhaps towards opposition, and others of
them towards giving the new plan a trial whenever it was ripe.
Among the latter was Woodville. He was approached by Jenner in London in the
summer of 1798, when he came up to print the Inquiry, and gave the advice that
horse-grease should be struck out from the text altogether.1 On the 17th of
June, 1798, four days before Jenner wrote the preface to his Inquiry, Woodville
was present at the Smallpox Hospital while his friend Pearson tried the
variolous test upon three formerly cowpoxed milkers from Willan's farm adjoining
the New Road, Marylebone.2 It will thus appear that Woodville, along with
Pearson, had become interested in the new protective inoculation, owing to
private communications with Jenner in London, before the Inquiry was through the
press. The variolous test on the three old cowpoxed
1 H. Fraser, Med. and Phys. Journ., 1805, p. 10.
2 Pearson's Inquiry, pp. 14, 15.
PEARSON AND WOODVILLE.
103
milkers was confirmatory, so far as it went, of Jenner's position ; none of them
received the infection, while two men from the same farm, not previously
cowpoxed, received it in the usual way. Pearson and Woodville were, accordingly,
eager to begin cowpoxing on the great scale, and the former made several
applications to Jenner for a supply of lymph in the course of the ensuing
autumn.
Jenner had no lymph to give to Pearson in September or November; nor did he
succeed in cultivating a stock, supposing that he tried to do so, from the two
cases of phagedenic cowpox ulcers in children after inoculation from the
Stonehouse cows in December. The only other persons who had tried the new
practice up to that time were Cline, in July, with matter from Jenner;
Thornton, of Stroud, on December 1st, with matter taken by himself from a Stonehouse milker; and Drake, of Stroud, with matter from Jenner, on the 13th
and 14th December. From none of these inoculations with cowpox
was a stock of matter raised ; they had all turned to ulceration, like Jenner's own cases ;
and at the opening of the year 1799 the project of cowpoxing, which had been
recommended to the world by Jenner six months before and is commonly supposed to
date in practice from that recommendation, was represented by some half-dozen
children at Stroud and Eastington slowly recovering from cowpox ulcers on their
arms.
It is at this juncture that Woodville comes on the scene. On Sunday, the 20th of
January, word was brought to him at his house in Ely Place that the cow-pox had
appeared among the cows at a dairy in Gray's Inn Lane. On visiting the
cowhouse next day (Jan. 21st)
104 COWP0X MADE MILD AND ACCEPTABLE.
he found three or four cows affected with "pustulous sores on their teats and
udder." A veterinary student then in London from Jenner's country, named Tanner,
whom he had sent for, took matter from one of the cows "which appeared to be
most severely affected with the pustular complaint"; and with that matter
Woodville the same day inoculated seven persons at the Inoculation Hospital, "by a single puncture in the arm of each, or rather by scratching the skin with
the point of the lancet till the instrument became tinged with blood."
The affection existed in only three or four of the cows when Woodville
inoculated from it, but eventually it spread through the whole herd of some two
hundred animals, those cows which were not in milk escaping. The infection was
accordingly fresh, or recently started, or in the making, when Woodville first
heard of it and obtained a supply of its virus. Calling again at the cowhouse
two days after, on Wednesday, the 23rd January, he found two or three of the
milkers with the beginning of cowpox on their hands. For only one of these are
there details given, namely, Sarah Rice, who had four cowpox vesicles on her
fingers, wrist, and forearm ; this milkmaid became an object of scientific
curiosity, and on Thursday, the 24th, being the fifth day since she had noticed
the whitish blebs on her hand or arm, her cowpox was inspected at the cowhouse
by Lord Somerville, Sir Joseph Banks, Sir William Watson, Dr. Willan, Dr.
Pearson and several others, and compared with the plate in Jenner's Inquiry.
Two of Sarah Rice's four vesicles were a third of an inch or more in diameter on that day, and already
COWPOX WITHOUT ULCERATION. 105
acquiring the bluish-white tint ; she had then some uneasiness in the armpit,
and a degree of headache subsequently; but none of the vesicles were painful,
and they all gradually went off without producing ulceration. She had been
infected when the diseased process on the teats had hardly gone beyond the cow
which first started it, and had presumably not yet acquired that type of
specificity which a longer duration and successive reproductions would give to
it; she had caught the disease, in fact, mildly, and it never came to painful
open ulcers with her at all, but healed under the crusts or scabs.
From one or more of the vesicles on her hand or arm Woodville had inoculated two
men on the 23rd of January, being the fourth day since the vesicles had been
noticed, and six other subjects at the hospital on the 24th, or the fifth day.
He thus got matter for inoculation at what we must call an early stage of the
cowpox vesicle. It is even more important to remark that the vesicles on the
milker, whence the matter for vaccination was taken, were not destined to become
painful open sores at all, having been caught from the first cow, or the first
two or three cows, in a series that extended by successive transmissions of the
infection until it reached to nearly two hundred animals, and must have lasted
weeks or months.
These circumstances had necessarily some significance for Woodville's success,
as compared with the failure of Jenner and of Thornton with the Stonehouse
cowpox in the month of December preceding. The failure to raise the
much-demanded stock of lymph from that source was owing, so far as we know, to
the ulcerous
106
COWPOX MADE MILD AND ACCEPTABLE.
type of disease transmitted in the first remove from the cow direct, or from the
milker; and with that alarming type we may connect the fact that the cowpox had
been passing from cow to cow at the Stonehouse farm in successive transmissions
since Michaelmas, or for more than two months. The severity of type, which would
have been thus cultivated by neglect or inveteracy, was shown to exist in fact,
in the case of the man-milker from whom Thornton, of Stroud, took matter for his
five inoculations at Stafford's Mill: the man's sores were supposed to be of the
same age (fifth day) as in the case of Woodville's milkmaid ; and yet there was
only one of them "which had not degenerated into a sordid and painful ulcer" at
even that early date, whereas Sarah Rice's cowpox never became ulcerous at all.
The pedigree of the world's vaccine, which is the pedigree of Woodville's stock,
was thus derived from an exceptionally mild type of cowpox in the cow and in a
milker, or from a stage of the particular outbreak at which the worst features
of the infection had not had time to develop through neglect and aggravation.
Woodville succeeded in passing cowpox matter for inoculation into common
currency, after Jenner had several times failed in attempts to do the same ; and
we have to associate with his success not only a certain superior skill as an
inoculator, but also a large element of luck.
We have now to see how his experiments at the Inoculation Hospital came out ;
and how his practical success was achieved. It will appear that Woodville at the
outset had as little of a reasoned and steady perception of the advantages of
early cowpox as had Jenner
CAUSES OF WOODVILLE'S
SUCCESS.
107
himself. It was his good fortune to get early intelligence of an outbreak, and
he made use of the matter for inoculation as soon as he knew of it. Thus blindly
led by fortune, he overcame initial obstacles that had baffled Jenner, and were
to give trouble to most of those who started new stocks of lymph in later years.
Luck alone enabled him to lead off with a type of cowpox vesicle which hardly
differed from the standard vaccine of today ; but so little did Woodville know
the law of the pathological process with which he was dealing, that he actually
allowed the cowpoxed arms in some instances to proceed to the fifteenth and even
nineteenth day of their development before he inoculated from them ; and his
venture was only saved from failure by a kind of empirical selective instinct
which led him, in a wide field of choice, to continue his stock with matter that
happened to stand for the early stage and the short cycle of cowpox. The
smallness of the vesicle thus induced, the shortness of its cycle, and the
mildness of its effects all served to divert the attention of Woodville from
the true analogies of cowpox, and to fix it upon the false analogy which had
been put into men's heads by Jenner's new-fangled name "Variolæ Vaccinæ."
Woodville has traced the pedigree of inoculated cowpox through a number of
generations, and has given in a table the names, ages, and other particulars of
about four hundred and fifty cases. For the first two hundred cases, he
professes to do more ; he gives information in the text under the name of each
of them, but the information is often meagre as regards the state of the
cowpoxed arm. The record is on the whole an authentic one, and is at all events
free from the suspicion of hav
108 COWPOX MADE MILD AND ACCEPTABLE.
ing been "edited," which attaches to everything of the same kind published by
Jenner. I can give here only a few results gathered from a study of his book.1
To begin with the strain of cowpox from which Jenner himself was supplied, and
which became in his hands the source of " true Jennerian lymph : " at the first
remove from the cow it was taken off as tenth-day lymph, at the second remove it
was eighth-day lymph, and at the next remove it was taken off and sent to Jenner
at the tenth day ; so that the vesicle was as if habituated to yield fluid from
the eighth to the tenth day, and, as we learn from Woodville's narrative, to
have the efflorescence out on the ninth day, and the first appearance of the
scab about the tenth.
Of Woodville's numerous other concurrent strains of lymph, several came to an
end, probably because the ripening of the vesicle got later and later ; whereas
those which survived and sent out the most numerous branches were strains with a
consistent record of early maturity. Thus, to take one from the same parent
stock as Jenner's own : Collingridge (direct from the cow) ; Butcher (10th day);
Jewell (7th day) ; Fisk (9th day); Murrell (7th day) ; Hatt and Playford, each
the vaccinifer of many more, on dates not stated. A parallel strain to this had
an obnoxious interlude, but came back, at the next remove, to a safe type :
Collingridge (direct from the cow); Butcher (10th day) ; Jewell (7th day); Reed
(10th day); Webb (15th day, had severe erysipelas) ; S. Timms, H. Timms, and Lee
(10th day),
1 Reports of a Series of Inoculations for the Variolœ
Vaccinœ or Cowpox.
London, 1799.
VACCINATIONS WITH EARLY LYMPH.
I09
each the vaccinifer of numerous others on dates not stated.
These and other strains claimed descent from the cow direct. But Woodville had
also a stock of matter in currency which he took from the dairymaid's hand ; and
there is something to be learned in following the fortunes of that, the more so
that the original infection on the milkmaid's hand and arm never came to the
usual painful ulcers of cowpox at all. Two men were inoculated from the
dairymaid's vesicles at the fourth day, having been inoculated with smallpox the
day before. Both infections ran their course independently of each other, and
the cowpox vesicles proved to be of so early a type that they had actually
scabbed before the variolous pustules did. Six others were inoculated from the
dairymaid's vesicles when these were a day riper, of whom we have a somewhat
different history. Three of them are unaccounted for altogether ; of the other
three, only one, James Crouch, aged seven, was used to continue a supply from.
Let us take the three in order :
William Harris, aged twenty-one : on 5th day vesicle began ; on 9th day it had
prominent callous edges and depressed centre, but hardly any areola ; on 12th
day areola going off; on 14th day vesicle dry at the centre, but its surrounding
edges of a bluish tinge and still abounding with ichorous matter ; 19th day the
cow-pox infection has become a dry scab, with a finely polished surface of a
mahogany-brown colour—the standard or classical termination of vaccination, and
a termination reached within a day or two of the usual time. We hear of no
strain being continued through this highly favourable case.
The next case from the dairymaid's vesicles at the fifth day is William Bunker,
aged fifteen : 8th day, vesicle has grown rapidly, pain in armpit with headache
; 10th day, vesicle already scabbing,
110 COWPOX MADE MILD AND ACCEPTABLE.
the areola extensive ; 12th day, the areola nearly gone ; 17th day, a dry scab
all over ; 20th day, complete smooth brown scab.
The case from which the stock was continued is James Crouch, aged seven :
9th
day, vesicle full of ichor, little areola ; 11th day, the efflorescence
extensive, vesicle drying at centre ; 14th day, pain in armpit, drying process
extending. From this case one person was vaccinated on the twelfth day, and two
on the thirteenth; the former, aged twenty-five, had a mild form of cowpox, but
was not used as a vaccinifer ; one of the latter, a child of twelve months old,
had a very severe illness, and was likewise not used as a vaccinifer; while the
remaining one, Edward Turner, aged twenty-four, was used to continue the stock
of the milker's cowpox from. On the 12th day his two vesicles began to dry in
the centre, but the margins were of a dark-red colour (areola), and studded with
minute vesicles, same time pain in armpit ; 14th day, the inner edges of the
vesicle distended with ichorous fluid. From that arm six persons were vaccinated
on the seventeenth and nineteenth days ; the results are given with far too much
brevity to be intelligible, but none of the six became the vaccinifer of others.
Thus the strain from the dairymaid's hand would have come to an end, only that
the strange experiment had been tried of inoculating from it at the first
remove (James Crouch) back to a cow's teat. It was through that indirect channel
that the dairymaid's lymph passed into the main current of English vaccine ; the
cow was infected (and gave infection to a man who milked her); from her, three
persons were inoculated, and from two of these a numerous race of vaccinifers
arose, whose several lymphs corresponded to the 8th, 9th, or 10th day of the
cowpox cycle.
It will thus appear that no lymph in Woodville's practice was passed into
general currency if it was older than the tenth day. For some unexplained reason
he allowed cowpox vesicles in several instances
JENNER SUPPLIED BY WOODVILLE.
111
to go on to the thirteenth, fourteenth, fifteenth, sixteenth, seventeenth,
eighteenth, or nineteenth days, before he took matter from them; but in all
those instances (excepting one that reached the fifteenth day, but was brought
back at the next remove to the tenth day) the stock failed or was discontinued
for one reason or another.
Woodville's earliest vaccinations were on the sixth day; and that early lymph
was got from two of his cases directly inoculated from the cow. That matter was
procurable from them on the sixth day, means exceptionally early maturity. The
sixth-day lymph produced good vesicles, which ended in the characteristic
polished mahogany-coloured crust; and no doubt lymph would have been continued
from that good stock had it not been that the cases at the second remove were
badly complicated with smallpox, which had been inoculated the day before the
cowpox, and ran its course concurrently.
After Jenner himself had made trial, in twelve cases, of the cowpox matter which
Pearson sent him from Woodville's stock, he wrote to Pearson (13th March, 1799):
"The character of the arm is just that of cow-pox, except that I do not see the
disposition in the pustule to ulcerate as in some of the former cases." In his
letter to Woodville, on receipt of the London lymph, he had spoken
grandiloquently about his own trials, evidently for the purpose of making
Woodville believe that he had been experimenting largely, and had as much
vaccine lymph of his own raising as he wanted. As a matter of fact, he had none,
having been baffled, every time he tried, by the ulceration of the
112 COWPOX MADE MILD AND ACCEPTABLE.
children's arms. He used the same disingenuous tone when he referred to
Woodville's lymph in the Further Observations, which came out in April
following.
The complications with smallpox, which troubled Woodville
for the first few
weeks of his vaccination practice at the Smallpox Hospital, gave Jenner his
opportunity. He is, of course, addressing the public, who knew nothing of the
private history of all these transactions as we now have it in letters and
memoirs. He does not let them know that he was without cowpox matter until the
15th of February, when he got some from Pearson ; nor does he say that it was
from the letter which came with the London vaccine lymph that he first heard of
the eruptions. "You will be astonished," Pearson had written, "at our talking
of eruptions." Jenner wishes the public to believe that it was merely for the
purpose of comparing it with his own (non-existent), that he tried Woodville's
lymph : "The matter they made use of was taken, in the first instance, from a
cow belonging to one of the great milk farms in London. Having never seen
maturated pustules produced either in my own practice among those who were
casually infected by cows, or those to whom the disease had been communicated by
inoculation, I was desirous of seeing the effect of the matter generated in
London on subjects living in the country." That was the only reason for his
making use of Woodville's matter—the only reason except that he was without
lymph of any kind, having uniformly failed to continue a stock of his own.
The same reason turns up again in his third pamphlet, under equally
disingenuous circumstances. Having
JENNER ATTEMPTS A STOCK OF HIS OWN. 113
come to London to secure his rights in the spring of 1799, and having found
Woodville's lymph distributed universally, he saw the necessity of initiating a
stock of lymph which might become the true Jennerian. The veterinary student,
Tanner, who had assisted Woodviile, was employed to get some cowpox matter for
Jenner in London, if he could. This, Tanner is said to have succeeded in doing
some time in April; he brought it to Jenner, who—proceeded to raise his stock
forthwith ? Not so ; he sent Tanner at once with it to Marshall of Eastington,
who was carrying on the vaccine practice in Jenner's absence, and had at that
time done more than a hundred vaccinations with Woodville's lymph. The matter
was intended to be the source of the historical "true Jennerian lymph" ; and
it was sent off to a remote part of the country, where no one ever knew what
happened to it, except Marshall himself. But this is all that Jenner says of his
despatching it to the country and his declining to raise the true Jennerian
stock from it, with his own hands or under his own eye, amidst the abundant
opportunities that the population of London afforded : "On the supposition of
its being possible that the Cow which ranges over the fertile meadows in the
vale of Gloucester might generate a virus differing in some respects in its
qualities from that produced by the animal artificially pampered for the
production of milk for the metropolis, I procured, during my residence there in
the spring, some Cow Pock virus from a cow at one of the London farms [Clarke's,
in Kentish Town] It was immediately conveyed into Gloucestershire to Dr.
Marshall, who was then extensively engaged in the inoculation of the Cow Pox,
the general result of which,
114 COWPOX MADE MILD AND ACCEPTABLE.
and of the inoculation in particular with this matter, I shall lay before my
Readers in the following communication from the Doctor."1
Then follow two
letters from Marshall, the first dated 26th April, 1799, and the second with the
date [8th September] omitted. Marhall's only reference to the cowpox matter
taken from the cow artificially pampered for the production of London milk, so
as to compare it with the corresponding virus taken from the animal which ranges
over the fertile meadows in the vale of Gloucester—a virus of which Jenner's
own experience was by no means idyllic—is contained in a postscript to the
second and undated letter, wherein this country doctor coolly observes that 127
vaccinations out of a total of 423 (or exactly 30 per cent.) were done with "the matter you sent me from the London cow." That is the whole evidence ; as if
the establishment of a stock of lymph from original cowpox in the cow were an
easy thing, an everyday occurrence, and as if Jenner had not failed every time
he tried! He goes on : "I discovered no dissimilarity of symptoms in these
cases from those which I inoculated from matter procured in this country."
Procured in this country! Why, it was procured by Woodville from the cow in Gray's Inn Lane. "Artificial pampering" would have been much the same sort of
thing in Kentish Town as in Holborn. It was wholly irrelevant to the problem in
any case, and was a mere "blind."
The special services of Woodville in making vaccination practicable were
recalled in 1802, when Jenner was about to receive ten thousand pounds from
Parliament ;
1 Collected edition of the three essays, 1800, p. 151.
RESEMBLANCE TO SMALLPOX. 115
it was Pearson, and not Woodville himself, who strove, in vain, to clear up the
historical sequence of events and the respective merits of parties. One of
Pearson's remarks is as follows:1 "The acuteness of Dr. Woodville, and the
obligations of the public to him, will be fairly appreciated by considering that
he was led to expect, from Dr. Jenner's account, a quite differently appearing
pock from what, I suppose, all the world now knows to be the fact." The circular
figure, he explains, the smooth surface, the less pointed shape, and the
peculiar scab were first noticed as distinctive of the cowpox by Woodville and
by Pearson himself. These are, indeed, great and sufficient distinctions of
cowpox from smallpox, even if there had been no gulf separating them in their
clinical history, and a still more insuperable barrier in the whole
epidemiological history of smallpox, which Jenner knew nothing of.
But Woodville's greater " acuteness" was nothing more than his greater honesty
and candour. Jenner knew these differences between cowpox and smallpox well
enough, indeed he knew of far more striking differences; only he took care not
to dwell upon them. If any one scans his writings closely, he will find how
dexterous Jenner had been in suggesting the identity or likeness of the cowpox
with smallpox on indecisive or irrelevant points. It is the fever that is the
same in the two, or the efflorescence, or the early changes in the appearance of
the incisions.
1 An Examination of the Claims, etc., containing a Statement of the principal
Historical Facts of the Vaccinia, p. 104. London 1802.
116 COWPOX MADE MILD AND ACCEPTABLE.
Two references to the identity-question in Jenner's second pamphlet [Further
Observations. April, 1799) are as follow: "Seeing that these sores [of cowpox]
bear a resemblance to the Small Pox, especially the confluent, should it not
encourage the hope," etc.; and, "In my former cases [i.e., previous to getting
matter from Woodville] the pustule produced by the insertion of the virus was
more like one of those which are so thickly spread over the body in a bad kind
of confluent Small Pox. This [with Woodville's lymph] was more like a pustule of
the distinct Small Pox, except that I saw no instance of pus being formed in it,
the matter remaining limpid till the period of scabbing." l
Woodville, then, passed into common currency a type of cowpox which was less
unlike the smallpox pustule than Jenner's had been ; and, at the same time, he
recognised the differences between his own cowpox and smallpox with more
"acuteness" than Jenner (as Pearson said), or with more candour and honesty. By
good fortune, as much as by technical skill in inoculating, he got rid of the
ulcerous termination of cowpox. Jenner himself admitted that the cowpox produced
by Woodville's lymph differed principally in not having "the disposition to
ulcerate as in some of the former cases" ; and Woodville said : "We have been
told that the Cow-pox tumour has frequently produced erysipelatous inflammation
and phagedenic ulceration ; but the inoculated part has not ulcerated in any of
the cases which have been under my care, nor have I observed inflammation to
occasion any inconvenience, except in
1 Ed. 1800, p. 136.
THE MILD. TYPE MISLEADING. 117
one instance, where it was soon subdued by the application of aqua lithargyri
acetati. It would seem, then, that the advantages to be derived from
substituting the Cow-pox for the Small-pox must be directly in proportion to the
greater mildness of the former than the latter disease."1
These are the words with which Woodville ends his Reports of a Series of
Inoculations, the authentic historical narrative of the establishment of cowpoxing on the great scale. His own good faith and genuine belief are
everywhere apparent; in those respects he represents, at the outset of
vaccination, the state of mind which has been the common one among medical men
regarding this practice. Cowpox is a milder disease than smallpox, and equally
efficacious ; that is the sum and substance of the vaccinator's creed. The
efficacy, as proved by the early evidence, falls to be considered in the next
chapter; we have here still something to say as to the real meaning of the mild
type, which was as conspicuously present in Woodville's lymph as it had been
conspicuously absent in Jenner's.
The freedom from risk in vaccinations done on the great scale is, of course, a
remarkable fact, when we bear in mind what sort of disease cowpox is. Of the
eight hundred thousand infants infected every year in this country with cowpox
virus, the vast majority escape very lightly. The mildness of type which
Woodville accidentally found in cowpox, or skilfully gave to it, became a cloak
for Jenner's numerous inconsistencies and evasions ; above all, it served to
cover, much more
1 Reports, p. 155,
118 COWPOX MADE MILD AND ACCEPTABLE.
successfully than his own practice had done, or ever would have done, the
unwarrantable liberty he had taken in changing the name of cow's pox into
smallpox of the cow. We shall never understand the merits of the vaccination
controversy until we understand how the practice came to be adopted by the
medical profession, on the recommendation and by the practical endeavours of so
honest a man as Woodville. It was not until forty years after Woodville's time
that pathological experiment brought to light facts which explain how the
illusions about inoculated cowpox had arisen ; although these facts have
remained unnoticed in this connexion until I adduced them in a book on The
Natural History of Cowpox and Vaccinal Syphilis.1 The pathological experiments
in question were those made by Ricord in Paris to inoculate the virus of
syphilitic sores, or venereal pox, on the skin. If these and other experiments
of the same kind had existed in 1798, the secret artifice of making cowpox first
known to the profession under the name of smallpox of the cow would have been
obvious at least to the pathologists, and would have been exposed in due course
; for it would have been shown conclusively that the affinity of cowpox was to
the great pox of man. In the exercise of that scientific method, the
pathologists would only have given proof to the profession of an affinity that
the vulgar had originally recognised, without reasoned argument, when they
called the sores on the cows' teats and on the milkers' fingers by the name of
cow-pox : an affinity that Moseley also recognised by his
1 London, 1887, p. 34.
INOCULATED SYPHILIS. 119
natural shrewdness when he sought to stigmatise the new inoculation with the
name of lues bovilla, in his first reference to it in 1798.
One of the fullest narratives of the inoculation of venereal pox by Ricord is
given in a communication to the first number of a German periodical called
Syphilidologie, edited by Behrend. The narrative is from the pen of Dr. Selke,
a German who was then following the hospital practice of Ricord, and who enjoyed
exceptional opportunities.1
A young man with multiple primary sores, three of them in the state of small
whitish blebs, came into the hospital for venereal disease at Paris on the 4th
of May, 1835 ; he was inoculated next day (5th) on the skin of each thigh with
matter from the primary malady—on the left thigh with matter from an unbroken
bleb, and on the right with matter from one of the blebs which had meanwhile
become an open sore. On the 6th a little pimple appeared at each spot, which was
soon surrounded by an areola or zone of redness an inch in diameter. On the 7th
the pimples changed into vesicles or pustules, and became seated upon a hard and
elevated base. On the 9th each pustule was an eighth of an inch in diameter ;
and on the day after they began to change into brownish crusts, which on the
11th
were a quarter of an inch in diameter. Day by day the crusts grew thicker and
broader, and on the 15th an ichor or watery matter was found oozing from beneath
them ; on the 22nd and 23rd the ichor was a thin brown pus, and on the 29th was
of a putrid odour. On the next day the crust on the left thigh, an inch and a
quarter broad, came off after poulticing, and revealed a round ulcer,
three-quarters of an inch
1 "I give this case," he says, " s I have seen it, and been enabled to note
the successive changes in the patient's condition, from day to day. An English
doctor studying in Paris, Dr. A. Thomson, and Dr. Vernois, interne under Ricord,
have also kept accurate journals of the case, which have been used by me to
correct my own notes."—Behrend's Syphilidologie, vol. i. 1839.
120 COWPOX MADE MILD AND ACCEPTABLE.
in diameter, with raised, hard, bluish edges, and a few large yellowish-red
granulations in the centre of its dry yellow floor. The day after, a new crust
had formed upon it, which was again detached by poulticing on the
1st June.
Meanwhile the crust on the inoculated spot of the right thigh had remained
adhering ; on the 5th June it was loosened round the edges, and on the 8th it
came away, disclosing, not an ulcer, but another thin, reddish-brown crust or
eschar, beneath which was an elevated growth or bouton three-quarters of an inch
in diameter ; the thin under-crust or eschar became firmer and darker when it
was exposed, and in the days or weeks following (for which the daily record is
not given), it came away, and left a cavity to be filled gradually by
granulations.
The left sore had preceded it in the same course of healing ; and in both
instances the induration had disappeared (without mercurial treatment) and the
healing had progressed to a cicatrix by the 20th July. The right inoculation was
complicated by a secondary sore on the skin near it, which began as a small
pustule on the 8th of June, and was the last part of the ulcerative process to
get healed.
These are sufficiently typical instances of the behaviour of an ulcerous
specific infection when reproduced on the skin by deliberate inoculation ; and
they are exactly parallel to the Stroud inoculations with cowpox, in the last
chapter (p. 96). The inoculated spot is first a pimple, which becomes a vesicle
or bleb or pustule, and quickly passes into a scab. It is under the scab that
the active process goes on for some time ; the scab may be removed (with the
help of poulticing, if need be), a new scab will probably form, or an eschar be
disclosed under the original crust, and the defect of substance will be at
length filled up with granulations.
For five-and-twenty years after that date numerous experiments were made in the
inoculation of venereal virus upon the skin of the same subject, or in the way
ANALOGY WITH SYPHILITIC VESICLE.
121
of practising the foolish craze for "syphilisation"; and much was learned of
the behaviour of a specific type of ulceration when so inoculated. The vesicular
stage often reproduced the figure and colour of the cowpox vesicle almost
exactly: that is to say, a large whitish spot of skin, tumid around the edge and
less elevated at the centre, which became a scab ; in due time the scab would be
thrown off and reveal either an eschar filling the cavity, or an open excavation
discharging a thin, stinking ichor. Mr. Henry Lee carried his inoculations
through several removes, and in a number of instances got the whole process to
end with the scab, just as it does in ordinary inoculation with the pox of the
cow's teats. The ulcerative phase might, in fact, be got rid of in the course of
successive reproductions of the venereal pox, as in the cowpox ; and it is
significant that the cases of the former which Lee got to dry up from the
vesicular stage, without ever passing into a phase of open ulceration, were
cases where he had taken the matter for inoculation at a very early stage of the
original sore.1 Those who may desire to see how exactly an inoculated venereal
sore in its vesicular stage can resemble the vaccine vesicle have only to look
at Lee's plates.2
Ricord's plates3 show a great variety of similar appearances; and we have that
experienced syphilo-grapher's recorded opinion,4 that the vesicula ror pustular
1 Med.-Chirurg. Trans., xlii. (1859), p 439.
2 Ib. xliv. (1861), especially fig. 2 of Plate II.
3 Maladies Veneriennes. Paris, 1851. Plate I. figs. 6 and 7;
Plate III. figs. 7, 8, and 9.
4 Reported by Diday, Traite de la Syphilis des Nouveau-nes et
122 COWPOX MADE MILD AND ACCEPTABLE.
stage of a syphilitic infection, produced artificially on the skin, might easily
be mistaken for a pure vaccine vesicle produced under the same circumstances.
In the series by Lee, among which there occurred his typical bluish-white
vesicle with depressed centre, the succession was kept up to the third remove, "
and the poison appeared quite as active and virulent at last as at first." What
makes cowpoxing so unique a thing among inoculated infections is that it has
been kept up through some thousands of removes, has been steadied, as it were,
to a particular eighth-day type, and cultivated into an artificial malady
called vaccinia. It cannot be doubted that this was begun by Woodville in the
boldness of ignorance, and under the illusion that he was really dealing with
smallpox of the cow. It is singular that the boldness of ignorance should have
come out so well as it has done; but, with all the average safety of cowpoxing
in infants, there have been many reminders during these ninety years that the
original type of cowpox is a foul ulceration and not a mere cutaneous eruption.
These occasional reversions of type, in contrast to the average mild type of
mitigated cowpox, have been dealt with by me in my former book on the Natural
History of Cowpox and Vaccinal Syphilis ; I advert to the subject here only in
so far as it serves to explain how Woodville could have gone on in good faith
propagating cowpox by inoculation, being misled by the name variola vacchuz, or
smallpox of the cow.
des Enfants a la mamelle. Engl. Transl. (New Syd. Soc.) London, 1859, p. 54.
THE VESICLE OF HORSE-GREASE.
123
The advocates of horse-grease, in 1800-1803, as we shall see, were under the
same illusion from their want of pathological knowledge. The tumid, whitish
vesicle or bleb on a farrier's or stableman's hand was just the same as that
upon a milker's, although the cow's pap-pox was far from resembling the horse's
"greased" hocks either in causation, or in development, or in issue.1 The point
in common between them was inveterate soreness through filth and neglect; and
the infective discharges of each, summing up as they did the history or
antecedents of the disease as it then was, brought out a process of infection
on the human hand which began in each like the white blister of a burn, and in
each generally became in due course a painful and corroding ulcer. Such being
the admitted character of each animal disease at the fountain-head, it seems
welt-nigh incredible that medical men, with some pretensions to a
discriminating knowledge of the processes of disease, should have allowed
Jenner's bold invention of a " smallpox of the cow," derived from horse-grease,
to pass into current professional teaching.
The fact that so unreasoned and nonsensical a doctrine did become current
suggests various reflections and vain regrets. Had there been in medicine some
encouragement for the logical or dialectical qualities of mind which are the
ground of authoritative position in the law, there would have been such a force
of critical scrutiny brought to bear upon the project of cowpoxing as would
1 Hering {(eber Kuhpocken an Kuhen, Stuttgart, 1839) speaks of the "slight
similarity" between the two diseases, although the infection of the human hand
from each of them was the same.
124 COWPOX MADE MILD AND ACCEPTABLE.
have effectually unmasked the illusion about " smallpox of the cow," and brought
the evidence on the protection against smallpox afforded by the ulcerous
infection of the teats to its proper bearings. Of such critical scrutiny in the
most authoritative circles, there was none. The invention of the new name was
artfully concealed and was never found out; and under the influence of the
plausible idea which the name covered, the evidence of protection was accepted
on terms which will seem incredibly loose to all who have not hitherto made
acquaintance with the standard of logic in the medical profession.
125
CHAPTER VI. THE VARIOLOUS TEST.
THE one great question which the profession had to satisfy themselves
upon, after a stock of cowpox matter had been found by Woodville and distributed
by Pearson, was whether vaccine inoculation warded off smallpox. There were
other points supposed to be at issue, such as whether vaccine caused an
eruption, whether vaccine inoculation spread contagion, and whether the
operation was attended with risk to life ; but the main question was whether it
answered the purpose that Jenner recommended it for. There were two ways
proposed of getting an answer to the question, the way of experiment and the way
of experience. Experience was, of course, the best test, but it was not usually
the quickest. The profession wanted to know the value of the new protective as
soon as possible, and they proceeded to test their first cowpoxed cases by
inoculating them soon after with smallpox. That was the famous variolous test.
No one seems to have discussed the validity of the variolous test as a proof of
the protective power of cowpox for practical purposes. Jenner resorted to it as
if it were a matter of course to do so; and his example was implicitly followed.
The principle of test-
126 THE VARIOLOUS TEST.
ing the force of one inoculation by means of a second was part of the current
inoculation doctrine of the time. Men of the stamp of Daniel Sutton were
accustomed to reassure their clients that they were safe, by showing them that a
second, or third, or fourth inoculation produced either no smallpox at all, or
a less amount of smallpox than the first inoculation.1 The assurance given on
these experimental grounds proved not unfrequently to be fallacious ; when the
real trial came, it was not unusual for the inoculated to take the epidemic
disorder just like their unprotected neighbours. There was no lack of sobering
experience of that kind ; so that in Paris the inoculators lost credit, and in
course of time almost ceased to find employment.
After describing in a letter to a friend his first case of cowpoxing (James
Phipps, 1796), Jenner goes on to say : "But now listen to the most delightful
part of my story. The boy has since been inoculated for the smallpox, which, as
I ventured to predict, produced no effect." 2 He was tried again a few months
after, when no effects were produced "on the constitution." Poor Phipps, as
Jenner used to call him, was inoculated some twenty times after that, and never
"took"; he was Jenner's show case of resistance to smallpox ; he was a poor
consumptive or scrofulous youth, with his lymphatic glands so clogged (after
the cowpox ?), that any subsequent inoculation of virus on the arm had no
chance of being absorbed.3
1 W. Langton, M.D., An Address to the Public on the Present Method of
Inoculation. London and Salisbury, 1767.
2 Jenner to Gardner, Baron, i.
3
Baron, ii. 304.
FAILURES AT STROUD.
127
The Inquiry contained only two, or at most three other variolous tests done on
vaccinated children; Jenner rushed off to London to get it printed, without
waiting to apply the test himself, but his assistant applied it in two or
perhaps three of the cases. Even careless readers could hardly have been
satisfied with the evidence, so far, that the vaccinated were "for ever after
secure from the infection of the smallpox," as Jenner boldly alleged. When he
went back to the country, after launching his discovery, he applied the test to
one other vaccinated child, and produced the local pustule, the eruptive fever,
and a transient eruption on the wrists. Jenner did not inoculate his Stonehouse
cases (in December, 1798) with smallpox; but the Stroud doctors put all their
ten cases religiously through the test, with the singular result that the only
one of the ten, an adult, whose vaccination had not held, was the only one who
stood the test, while the other nine all had smallpox in one degree or another,
in the usual inoculated form, the two who had the worst vaccinal ulcers having
stood the test rather better than the others.
By way of a control upon Jenner, the independent evidence from Stroud was not
encouraging. The next evidence was that which Woodville's continuous series of
cases enabled him to supply on the grand scale. He carried on his vaccinations
at the old Inoculation Hospital, in an atmosphere of smallpox contagion ; so
that cowpox had a great opportunity of showing its protective power. Jenner had
hastened to advise Woodville to inoculate those patients with smallpox who
might "resist the action of the cowpox matter " ; and
128 THE VARIOLOUS TEST.
Woodville did inoculate several a few days after they had been vaccinated. Even
those who did not resist the action of cowpox, but on the other hand developed
full and correct vesicles, acquired the smallpox also, either by inoculation or
by contagion. Thus, Ann Bumpus, from whose vaccine vesicles Jenner's own stock
of lymph was procured, sickened for natural smallpox on the tenth day from her
vaccination and had 310 pustules of that disease on the fifteenth day. Her
immediate vaccinifer but one, Jane Collingridge, was inoculated with smallpox on
the fifth day after vaccination, and had an eruption of 100 to 200 variolous
pustules. These experiences were frequent in the first weeks of Woodville's
practice with cowpox in the atmosphere of the smallpox hospital. Woodville was
so sure of the protective power of cowpox that he tried to explain the eruptions
in every way but the right one. "I did not conceive it to be possible," he
wrote, "till after I had made repeated trials of the new inoculation out of the
hospital; nor is the fact to be easily explained," etc.1
At length it was admitted that cowpox did not prevent smallpox if both
infections were received together, or if the cowpox had no more than a few
days' start ; the protection from smallpox was only established in the system
when cowpox had run its course, and produced its full constitutional action.
The system was supposed to have been, as it were, touched profoundly by the
virus of cowpox, and to have been rendered insensible to the action of smallpox
for ever after. No
1 Med, and Phys. Journ., Dec, 1800.
EVIDENCE ON THE GRAND SCALE. 129
one was able to explain how an infection that was so unlike in kind to smallpox
as to run its full course while the latter ran its full course also, could
become an antagonistic influence in the years succeeding, when nothing remained
of it but a scar ; indeed, the prophylaxis was candidly acknowledged, as we
shall see, by those who thought about it at all, to be of the nature of a
mystery.
Woodville put all his cases through a variolous test shortly after the cowpox
infection was over, including even the large number of his cases who had gone
through the smallpox itself concurrently with the cowpox. They all stood the
test equally; and these cases, to the number of several hundred, formed the
nucleus of the great body of English variolous tests which the Germans and
others were fond of adducing as a grand total of evidence, behind which it was
unnecessary for most doctors to go. Pearson also wrote that he had "inoculated
many scores with smallpox matter after the vaccine disease, and never with the
effect of exciting the smallpox." He adds, however: "I have, indeed, been
desired to see even some of my own patients who, I was acquainted, had taken the
smallpox ; but these cases turned out to be either those in which the cowpox had
not in reality preceded, or they were cases of merely local affection from the
inoculated smallpox."1 Jenner's friend, Marshall, of Eastington, wrote that he
had tested 211 out of his total of 423 (as nearly as possible fifty per cent.),
but found that every one was protected.2 This is
1 Med. and Phys. Journ., ii. (Oct., 1799), p. 216.
2 Lond. Med. Rev., iii. (March, 1800).
130 THE VARIOLOUS TEST.
the same Marshall who declared that 127 out of his total of 423 (as nearly as
possible thirty per cent.) were vaccinated with lymph of his own raising.
Evidence from various parts of the country soon began to appear in the medical
journals, Evans, of Ketley, near Shiffnal, had vaccinated successfully
sixty-eight persons, of whom thirty-nine had vaccinal eruptions and several had
troublesome ulcers ; of these he tested twelve with smallpox, and found that
they resisted it.1 Even when the vaccinated did not resist smallpox inoculation,
it was not thought of much account. M.Ward, surgeon to the Manchester Infirmary,
sent the following series of cases,2 and "congratulated mankind " on the
success of cowpox :—
Case I.— 16th April, girl aged 7, successful vaccination (oblong vesicle on 13th
day, full of limpid fluid and surrounded by areola) ; was thereafter inoculated
with smallpox, and had the disease in the confluent form (1600 to 1800
pustules).
Case II.—Infant aged nine months, brother of No. i. Successful vaccination at
two points (one healed on 15th day, other covered by crust, which became a
superficial ulcer after the 21st day and yielded ichor up to the 32nd day).
Caught the smallpox from his sister, and had about 50 pustules, mostly on his
face, which began to show about the 35th day from his vaccination.
CASE III.—Aged 5 months. Vaccination did not hold. Variolation did hold.
Case IV.—Aged 5 years. Did not take vaccine. Did not take smallpox after two
trials by inoculation.
Case V.—Aged 9 months. Did not take vaccine. Did not take smallpox at twice.
Case VI.—Aged 3 years. Did not take vaccine. Did not take
1 Med. and Phys. Journ.,ii. 310.
1 Med. and Phys. Journ., ii. 134, paper dated 12th July, 1799.
A SUBJECT OF CONGRATULATION.
131
smallpox. Variolation had failed, beyond local inflammation, when tried four
months before.
CASE VII.—Aged 5 months. Vaccination failed, though tried twice. Variolation
failed, but arm swelled.
CASE VIII.—Aged 16 months. Successful vaccination (areola on nth day, very
extensive, with much fever). Variolated on the 29th day, without result.
CASE IX.—Aged 19 weeks. Successful vaccination (slight vaccinal eruption on
arm). Variolated on the 12th day, local pustule on the 19th day, eruption (of
thirty pustules) on the 22nd day.
CASE X.—Aged 14 weeks. Inoculated from Case i., evidently with the coexistent
smallpox matter mistaken for cowpox. Sickened on 7th day, eruption of smallpox
on 10th, full burden on 12th, but not confluent. Variolated on the 14th day
without result.
Case XI.—Aged 9 months. Also inoculated from Case i. (complicated with
smallpox), with same result as in Case x.
Cases XII., XIIL, and XIV.—Results not known.
Ward was highly pleased with this record of the variolous test What are we to
think of the temper of the profession at this time, when a respectable
practitioner congratulates the world upon a great discovery, with failure
staring him in the face from the record of his own experience? Only one of all
his cases resisted variolation after being cowpoxed, namely Case viii.; three
cases took smallpox in the clearest way after being cowpoxed (Nos. i., ii., and
ix.); four cases resisted vaccination, and likewise resisted variolation ; one
case resisted vaccination, and received the subsequent variolous infection ;
and two cases were apparently variolated in the first instance by misadventure.
Some practitioners were shaken in their faith when the variolous test failed.
One of these, Shorter, of Bloxham, near Banbury, wrote to Jenner that he had
succeeded in producing the correct variolous pustule at the place of
132 THE VARIOLOUS TEST.
insertion in recently vaccinated cases ; but Jenner's "gentleman-like letter
removed all my doubts, and I have again resumed the practice."1
Another, Boddington, found, in the case of his own child, that the test produced not
only the local pustule, but also the general smallpox eruption. Jenner, in
reply, gave him a tremendous wigging :2 "How a gentleman, following a
profession the guardian angel of which is fame, should have so committed himself
as to have called this a case of smallpox after cowpox is not only astonishing
to me, but must be so to all who know anything of the animal economy." This, as
Baron says, is a good illustration of Jenner's "method of dealing with rumours
of that kind." Beyond all question, the eruption was the due consequence of
inoculating with smallpox virus. Jenner's bullying attempt to refer it simply to
the child's tender skin should be pondered by all who believe his reasoning
powers to have been masterly.
The variolous test, with such validity as it had, was not applied at all
generally in England after the first weeks of cowpoxing in the spring and summer
of 1799. The total of some two thousand successful English tests, which got
extensively quoted abroad and helped greatly to recommend the new practice, was
made up of Woodville's hundreds, of Marshall's two hundred odd, of Pearson's
scores of cases, and of other large aggregates, for which the details were never
given. Whenever we have the opportunity to scrutinize the actual sequence of
events, we find that the inoculation of smallpox was
1 Med. and Phys. Journ., iii. 348. The letter is a good sample
of Jenner's wheedling manner.
2 Jenner to Boddington, 21st April, 1801, in Baron, i. 445.
THE AVERAGE EXPERIENCE. 133
nearly always followed by some degree of local action and in most cases by a
full and correct variolous pustule. It was chiefly the eruptive fever and the
general eruption which aborted or remained in abeyance. A common experience,
probably the average experience, was thus stated in a letter to Jenner by W.
Forbes, of Camberwell, who had applied the test a good many times :1
"Although the variolous inflammation perfectly succeeded, and, I have no doubt,
would have infected others inoculated with the fluid secreted, yet the
constitutional progress was as completely arrested as if the patient had gone
through the smallpox before."
In their indifference to the production of local smallpox in testing the virtue
of cowpox, and to any slight show of eruptive fever, the profession betrayed a
singular facility for dropping all at once a mode of reasoning that they had
made great account of under the old inoculation regime. The slight effects of
the smallpox inoculation, mostly the local effects, which were thought nothing
of when the inoculation was done to test the protective virtue of preceding
cowpox, had been held of the utmost account, had been carefully noted and
liberally appraised, when inoculation was an end in itself, or when it was done
in the ordinary way of pre-Jennerian protection. In order to make clear to
modern readers this use of a double standard of what constituted effective
variolation, it will be necessary to go back some thirty years prior to the
advent of Jenner. The digression will be of some length, but the importance of
the subject will perhaps be found to justify it.
1 Med. and Phys. Journ., vi. 314.
134 THE VARIOLOUS TEST.
The years from 1764 to 1767 saw the rise of a "new method" of smallpox
inoculation in England, and a lively controversy thereon. Whatever may be urged
against the discretion and wisdom of the medical men who took up the practice of
inoculation after it was first introduced from Turkey by Maitland, at the
instance of Lady Mary Wortley Montagu, in 1721, it can hardly be said that they
scamped their work. They seem to have given a considerable dose of the
inoculated smallpox either unavoidably or of choice,1 with the intention of
anticipating the attack of it in the ordinary way of endemic or epidemic
contagion. The seventy of the engrafted disease was a serious bar to the general
adoption of this Turkish and beauty-saving artifice ; and in a few years it fell
into considerable disrepute. From the depths of its unpopularity it emerged
shortly after to enjoy a qualified success ; and from the year 1764, when the Suttonian method was introduced, it continued in vogue in England until it was
superseded by Jenner's cowpox. Of the method as practised before Sutton's and
Dimsdale's time, we may take our impressions from the well-written essay by
James Burges.2
The obvious thing in the essay of Burges is his anxiety to bring out the
eruption, to give it facilities for coming out, and to obviate whatever would
tend to repress it or "repercuss " it. The Boerhaavian pathology of the time
was used as the scientific justification of
1 See Nettleton (Philos. Trans, of Royal Soc, 1722) and other
authorities cited by White in Story of a Great Delusion. London,
1885, p. 30.
2 The Preparation and Management necessary to Inoculation.
London, 1754.
OLD-FASHIONED VARIOLATION. 135
these common-sense aims. Warmth in bed was advised, lest the external air should
"obstruct the exclusion of the infectious matter." The apartment was not to be
"so open and cool as to produce a degree of chilliness sufficient to check those
sweats that are in this state quite necessary for bringing out the eruption."
Again, the cold of winter, "by obstructing the pores and constringing the
vessels, brings such an overcharge on them that they become unable to get rid of
the load " ; and the extreme heats of summer had somehow the same obstructive
effect in another way. One great risk of "repercussing" or driving back the
eruption was that the habit for long after would be clogged or encumbered with "obstructions." Another common-sense risk was thus technically expressed by
Richard Holland in 1728: "In a genuine and complete eruption, the matter of
the disease is entirely evacuated, and therefore there is no possibility of a
return. But in an imperfect crisis, part of the original cause may remain."
1
It was only when the general eruption of the engrafted smallpox was checked by
a chill or other accident that the early inoculators counted it a failure ; if
the pustules died away, or came to nothing when due care had been taken, it
meant that the habit was a favourable one, or that there was a natural
disposition to take the disease mildly. But in Burges we may notice also the
first insidious beginnings of a mode of reasoning which was carried to great
lengths a few years later. The original practice in England was to insert
1 Observation on the Smallpox and a more effectual Method of Cure. London,
1728.
136 THE VARIOLOUS TEST.
the smallpox matter at a quite large and deep incision in the arm, and, in some
instances, to keep open the sore so produced as a rendering issue for weeks
after. Even if no effort were made to keep the original incision an open sore,
it might go on rendering for some time. In such cases, as Burges says, "the
extent and duration of the primary variolous insertion would seem to have
checked the general eruption" ; and he gives a particular instance where the
primary spot sloughed, gradually widened, and continued to discharge for six or
seven weeks, so that no general eruption took place at all. But now let us
carefully observe the significance that Burges puts upon this abeyance of the
eruption :1 " But if the sores keep open, and the feverish symptoms come on at
the usual time, though not a single pustule should appear, I am convinced that
the patient is as secure from ever having the smallpox as if there had been a
plentiful eruption ; at least there is no instance that has ever been produced
where it has happened ; even though the utmost endeavours have been used to
procure a second infection on a supposition that the first had been imperfect."
2
Other means, preferable to an open sore on the arm rendering matter for weeks,
were soon found to keep back the general eruption, without impairing the value
of the protection given by the single representative local pustule. This was
the " new method " of inocula-
1 L. c, chapter xv. p. 41.
2 The stock instance in the books is that of the Hon. John
Yorke, inoculated (without eruption) by Mr. Sergeant Hawkins at
the age of twenty, and reinoculated in vain.
THE NEW METHOD. 137
tion, begun in France by the famous inoculator Angelo Gatti, practised in
England to their own enrichment by Daniel Sutton and by Dr. Dimsdale, of
Hertford, and, after a vain remonstrance by two or three staunch men, generally
approved by Sir George Baker, Sir William Watson, and other leaders of the
profession in the latter half of the eighteenth century.
Gatti found respectable or scientific reasons for the vulgar charlatanism of old
women in the Levant. Sir George Baker approvingly quotes him to this effect
(1766) :1 "In the Levant old women have inoculated ten thousand people without
an accident. They only ask : Is the person prepared by nature ? Is the breath
sweet? Is the skin soft? Does a little wound heal easily ? Then the inoculation
may be undertaken without the least fear of danger." These were the only
conditions made by the old witches of Mussulman countries ; but the conditions
were the quintessence of craft, whether Sir George Baker knew it or not. They
meant no less than a selection of such subjects as experience had shown to be
likely to have the milder form of smallpox by inoculation ("prepared by nature,"
forsooth !). Gatti, in the exercise of his art in France, could hardly pick his
cases by the divination which old women in the East were privileged to exercise
; but he always endeavoured to make the inoculated disease as mild as possible.
Instead of making a large incision, and laying the matter therein upon a thread,
he made a small oblique puncture with a lancet point and in-
1 Inquiry into the Method of Inoculating the Smallpox. London, 1766.
138 THE VARIOLOUS TEST.
serted the minutest quantity of matter. Moreover, he took the matter from as
early a stage of the natural smallpox as any fluid could be got at all, and from
the mildest case ; and, improving upon that, he at length transferred matter
from the early vesicle of one inoculated arm to another person's arm, and so on
through a series of cases from arm to arm. He dropped the old treatment that had
been used to "bring out" the eruption ; and, by keeping the patient's hand
immersed in cold water, he often succeeded, with the help of his other arts, in
limiting the whole process to the primary smallpox pustule at the place of
insertion.1
For some time Gatti did a large business in his "new method " of inoculation,
amassing a fortune and acquiring fame. At length an accident happened in the
case of a great lady, the Duchesse de Boufflers. Two years and a half after
being inoculated by Gatti, and assured by him of protection, she had an attack
of smallpox, which made a great noise. Her inoculated protective disease had
consisted of the local pustule, some abortive pimples round it, an abortive
fever on the eleventh day, and one large pustule on the forehead which left a
mark visible for long after. About the same time, many other persons in Paris,
who had been inoculated by Gatti, confidingly exposed themselves among the sick
during an epidemic of smallpox, with the result that they caught the disease in
large numbers, and not a few of them died of it. These accidents made an end of
Gatti's credit, and the practice of inoculation,
1 See the summary of his practice in Bohn's Handbuch
der Vaccination.
Leipzig, 1875, p. 82.
DANIEL SUTTON. 139
by whatever method, was forbidden in Paris by a statute of the Parliament.
In England it fared otherwise with the new method of "buying the smallpox " on
the easiest terms. The method was much the same as Gatti's, with some
additional conjuring by means of secret pills and powders, which were at length
found to be calomel and antimony, the theoretical Boerhaavian "antidotes" to
smallpox. According to Daniel Sutton's advertisement, which he put out in the
form of a sermon (with appendix) by a chaplain in his pay, the patients in his
establishment at Ingatestone "have in general little or no sickness ; their
indisposition is so trifling that they are ashamed to complain, and in a few
days they are perfectly well. Here is no confinement, no keeping of bed. All is
mirth, and all seem happy. If any patient has twenty or thirty pustules, he is
said to have the smallpox very heavy."1 According to Chandler, however, this was
merely the tempting bait ; for some of Sutton's patients had a more copious
eruption, despite all his efforts to keep it back.
Daniel Sutton quickly made money, and in 1766 he was followed by Dr. Dimsdale,
of Hertford, who also made a fortune and became a banker in Cornhill. Dimsdale
gave a tolerably candid account of his practice. He inoculated many of his
patients a second time, and produced the same local pustule as before, but
without fever. Others had symptoms of the eruptive fever (on the first
trial), but no pimples. "In
1 Rev. R. Houlton, Sermon in Defence of Inoculation, Chelmsford, 1766.
Appendix, p. 40.
140 THE VARIOLOUS TEST.
many instances of cases related by the doctor, on going home the smallpox seeds
were brought forward, and the disease appeared in the usual stages." l
The "new method " of making inoculated smallpox easy not only took the fancy of
the public, but soon found vindication in the profession. Ruston, Giles Watts,
and others published on it ; according to Watts, "a most extraordinary
improvement is made, and the art of inoculation is enabled to reduce the
distemper to almost as low a degree as we could wish. . . . There is now an
opportunity of seeing what a very small number out of the multitude of persons
of all ages, habits, and constitutions, who have been inoculated in these parts
[Sussex and Kent] have been ill after it."2
The opposition to the new method was confined to a few, notably William
Bromfeild, an eminent court surgeon, and Dr. Langton, of Salisbury. Bromfeild,
in an essay dedicated to the Queen, reminded his colleagues of the general
tendency in medicine towards credulity, and remarked that even the French had
passed through a fit of the same ; for it was mere credulity on their part "to
have given credit to a man [Gatti] who should assert he would give them a
disease which should not produce one single symptom that could characterize it
from their usual state of health." He was "afraid that inoculation, though
hitherto a great
1 W. Bromfeild, Thoughts on the Method of Treating Persons
Inoculated for the Smallpox. London, 1767.
2 Giles Watts, M.D., A Vindication of the Method of Inoculating the Smallpox. London, 1767, p. v.
PROTESTS AGAINST BOGUS INOCULATION.
141
blessing to our island, will in a very short time be brought into disgrace," if
people went on believing "that health and security from the disease can be
equally obtained by reducing the patients so low as only to produce five to
fifteen pimples." He had been told (what was the fact) that "many lost their
lives in Paris, after the epidemical phrenzy for inoculating in the new way
there, which in general neither occasioned fever nor eruptions." If they could
see the new method only in the light of its mildness, it would be unpardonable
prejudice to oppose it ; but did it really give protection from smallpox ?l
Dr. Langton was even more alive to the illusory nature of the new practice. He
issued an Address to the Public on the present Method of Inoculation, proving
that the Matter communicated is not the Smallpox, because Numbers have been
Inoculated a second, third, and fourth Time, that therefore it is no security
against a future Infection.2 After quoting the case of the Duchesse de Boufflers,
he says that "not above one in ten have so many variolous symptoms as may be
re-
1 Bromfeild, l.c., 1767, pp. 43-5. His own inoculation practice
at Court was attended with disasters. Prince Octavius, youngest
child of George III., died of inoculation. In other cases within
the Court circle, the inoculation by Bromfeild, severe though it
was, proved to be no security. See Court and Private Life of
Queen Charlotte, being the Journals of Mrs. Papendiek. London,
1887, i. 41, 70, 270. In a letter to James Moore, who was writing
a history of vaccination, Jenner says : '"The late Mr. Bromfeild
abandoned the practice of inoculation in consequence of its failure.
Is not that a precious anecdote for your new work?"—Baron, ii.
401.
2 London and Salisbury, 1767.
142 THE VARIOLOUS TEST.
marked in her case." l Besides the local pustule, there were usually only one or
two pimples, or watery vesicles, which never maturated.
Bromfeild and Langton were not supported by the academical leaders, who, as
usual, found it politic to go with the stream. The principal spokesman was Sir
George Baker, afterwards president of the College of Physicians, who had no
objection to the practice of Daniel Sutton provided it were not kept a secret.
He waxed eloquent on the invariable plea of the more stolid Englishman, the plea
of giving the novelty a trial. "He is an enemy to improvement," said Baker,
"and is no philosopher, who fastidiously and upon mere speculation rejects what
he has not brought to the test of experiment." To the test of experiment,
accordingly, they all set about bringing Sutton's quackery ; with the usual
result that, in a very short time, their self-love got involved in the issue of
the experiment, and a course of dogmatics and apologetics, or what is commonly
called hard swearing, was entered upon so as to circumvent the teaching of
common sense.
The mere formality of smallpox, as gone through by the new method of
inoculation, was held to be a sufficient protection from the epidemic
contagion. It became at least the object of inoculators, even if they did not
always succeed, to attenuate smallpox to the shadow of its real self. Such was
the respectable practice in England during the latter part of the eighteenth
century. In 1796, only two years before cowpox came on the scene, Woodville
published the first (and only) volume of his History of the Inoculation of the
Smallpox
1 L. c, p. 18.
PROTECTION BOUGHT CHEAP. 143
in Great Britain, wherein he carries the developments of the practice down to
the adoption of Dimsdale's mild methods. A sentence in the preface gives us a
glimpse of Woodville's own aims ; new researches, he says, are needed, because
"the established process [Sutton's and Dimsdale's] will, in certain cases, not
only fail of success, but evidently produce the disease in an aggravated
state." We have further evidence of the contemporary mode of variolation in the
handbook published as late as 1806 by Lipscomb, the third in succession of a
noted family of inoculators.1 Matter should be taken, he advises, as soon as any
fluid can be obtained from the eruption in a mild case of natural smallpox ; the
patient should be kept out of bed and as much as possible in the open air,
particularly during the eruptive fever. If these precautions be observed, "the
complaints are usually very trivial during the eruptive stage; the patient eats
and sleeps well ; a few pustules may appear, irregular and dispersed."
Such was the kind of protective smallpox inoculation deliberately aimed at, and
in the majority of cases accomplished, under the regime of the " new method,"
which dated in England from 1764. There is no reason to suppose that the earlier
and severer type of inoculated disease was ever re-introduced of purpose into
English practice, although there may have been old-fashioned inoculators here or
there; and there probably were always a few cases which turned out more severe
than the inoculator had intended or had thought necessary. In Jenner's time the
type and mode of inoculation were those of Sutton and Dimsdale; his near
neighbour,
1 Manual of Inoculation. London, 1806, p. 8.
144 THE VARIOLOUS TEST.
Fewster, of Thornbury, had actually been a pupil of Sutton in the inoculation
business.
But we have clear enough evidence of what Jenner himself understood by variolous
inoculation, and wished others' to understand by it, in its new use of testing
the strength of cowpox. The Inquiry of 1798 contains a few pages devoted to the
subject of smallpox inoculation, which are introduced with a very definite
purpose, although that purpose is nowhere explicitly stated. We suddenly find
ourselves reading about "varieties of smallpox," from which we pass to one
variety that had occurred in the inoculation practice of "a medical gentleman,
now no more," which variety was " certainly not the smallpox " at all. The
deceased inoculator had some special way of managing matter; "so strongly
persuaded was he that he could produce a mild smallpox by his mode of managing
matter that he spoke of it as a useful discovery until convinced of his error by
the fatal consequence which ensued."1 The matter produced the local pustule or
pustules, swellings of the glands in the armpit, the ninth-day fever, and
"sometimes eruptions"; but it so happened that epidemic smallpox broke out in
the locality, and " many unfortunately fell victims to it who thought
themselves in perfect security."
Jenner recalls the incident (which was of a kind common enough everywhere) in
order to suggest that these inoculations had been spurious : " But what was the
disease ? Certainly not the smallpox." This is very like the staunch language of
Langton and Brom-
1 Jenner's Further Observations, ed. cit., p. 84.
HOW JENNER WORKED THE TEST.
145
feild, who protested against all modes of "managing matter" with a view to make
the inoculated disease a mild or formal affair. That, however, was not Jenner's
suggestion; the spuriousness and inefficacy that he wishes to guard his readers
against, with a view, however, to the variolous test of cowpox, and not to
inoculation for its own sake, were due to the fact that the variolous matter
had not been "managed" enough; it had undergone some (purely imaginary) "putrefactive " change from being taken at too advanced a period of the smallpox
pustules. He points out how careful he had himself been to avoid such causes of
" spuriousness" in trying the variolous test upon cowpoxed milkers :—
" In some of the preceding cases I have noticed the attention that was paid to
the state of the variolous matter previous to the experiment of inserting it
into the arms of those who had gone through the cowpox. This I conceived to be
of the greatest importance in conducting these experiments." No doubt of the
greatest importance. And what was the attention that he paid to the state of the
variolous matter previous to using it for the proof that cowpoxed milkers could
not take smallpox? It is only in one of the "preceding cases," not in "some,"
that any notice is taken of the point; but that notice is quite significant
enough of what this super-ubtle genius wanted to hint to his readers. Case
iii.: John Philips, a cowpoxed milker, aged sixty-two, was tested with smallpox,
the matter having been "taken from the arm of a boy just before the
commencement of the eruptive fever." Just so; the variolous test was applied in
the most mitigated form
146 THE VARIOLOUS TEST.
of Gatti's and Sutton's "new method "; the matter for inoculation was taken
from the local pustule of a previous case of inoculation, not from a general
eruption of natural smallpox ; it was taken at an early stage, before it had
undergone the supposed "putrefactive" change which made it spurious; and it was
inserted, not by a deep incision, but by a superficial puncture, as well as in
small quantity.
Very few modern readers of the Inquiry will see the drift of those pages in it
devoted to the modes of variolous inoculation unless they read them with
especial care. The subject was not introduced for nothing ; these portentous
warnings about "much subsequent mischief and confusion" (p. 56), if attention
were not paid to the state of the variolous matter used for inoculation, were
merely Jenner's way of creating a preference for the ultra-Suttonian method of
inoculation, when the variolous test was to be applied to his new project. It
was in that way that he had himself applied the variolous test; it was in that
way that he wished others to apply it; and there can be no doubt that it was
after the Suttonian method that it was generally applied in proving the
protective power of cowpox.
We come, then, to this extraordinary result, that the very same degree of
smallpox infection, namely, the local pustule alone, or the local pustule
followed by an abortive fever and a few abortive pimples, which had come to be
reckoned a sufficient manifestation of the disease when inoculation was an end
in itself, was now reckoned an insufficient manifestation, and, in fact, an
evidence that the infection had not taken at all, when inoculation was done
after cowpoxing and with a view
WITH A DIFFERENCE. 147
to test the alleged antagonistic power of the latter against smallpox. I am
aware of the gravity of that accusation against the common intelligence and
moral prudence of the medical profession on the occasion, when they were asked
to deliver judgment on Jenner's novelty. Every allowance should be made for the
position that they were placed in with reference to the new protective disease.
As Denman tells us, hardly any of them had ever heard even the name of cowpox
before; it was sprung upon them by a practitioner of the dairy-farming
districts, who was treated with unusual deference because he happened to be a
fellow of the Royal Society, and had the air of being a modest and honourable
man ; it was sprung upon them under the invented name of variolœ
vaccinœ, or "smallpox of the cow," which, for all they were ever told, might have been an
ancient designation. The profession were undoubtedly mystified and hoodwinked
about the true nature of cowpox ; they were started off on an entirely false
analogy by Jenner's adroit title-page. But I can find no excuse for their
conduct over the testing inoculation with smallpox, on the result of which it
was generally agreed that the verdict was to turn. If any of my readers or
critics, having taken the trouble to go over the evidence at first hand, will
make out a case more favourable to the leaders and editors of medical opinion at
this juncture, I shall be ready to amend the result of my own investigation,
finding it somewhat incredible as it stands. The conclusion, as it stands, comes
to this : that the same effects of smallpox inoculation which were counted good
enough when the object was to give protection to their patients from the sub-
I48 THE VARIOLOUS TEST.
sequent risk of contagious smallpox, were reckoned as nothing at all when the
object was to test whether their patients had been made safe by cowpox. I do not
know any uglier incident in the history of medicine than that astounding
volte-face.
We have now brought the evidence in favour of the variolous test down through
several degrees. Firstly, the test, as applied naturally or accidentally at Woodville's hospital, broke down palpably; secondly, in a number of the early
trials for which we have full particulars, it was followed by a fair average
amount of smallpox as inoculated ; thirdly, in the ordinary run of cases, it was
often followed by about as much of smallpox as the bogus inoculation practice
of the time was calculated to produce. But if there be still a margin of
abortive inoculated smallpox standing at the credit of the previous cowpox,
there is ample explanation of the fact without assuming any specific antagonism
in the vaccine. This is the last remaining point to be considered in connection
with the variolous test.
In the first place, for the ordinary purpose of inoculation, it was not enough
to take a child and merely insert the smallpox matter under the skin. Some
trouble had to be taken so as to ensure that the inoculation would produce any
result at all. We find this frankly admitted by an enthusiastic vaccinator,
Trotter, the well-known author of Medicina Nautica :1—
"When my practice formerly lay much in this way, and finding my incisions
often fail in communicating the variolous infection, particularly with very
young
1 Med. and Phys. Journ., iii. 525.
GIVING IT A FAIR CHANCE. 149
children, I was in the habit of ordering the arm to be well bathed with warm
milk and water; which, when wiped with a rough towel, would excite such a
temporary inflammation of the spot that I never failed afterwards." Success in
variolation, he concludes, depended, for one thing, upon the state of the skin
at the seat of puncture. As a practical comment upon this, it may be stated that
Sutton and others frequently succeeded in smallpoxing the vaccinated, after the
believers in cowpox protection had failed.1
Jenner himself, in the section of the Inquiry where he specifies the sorts of
persons for whom cowpox was best suited, mentions a class of children who were
apt to resist the inoculation of smallpox altogether. Scrofulous children, with
clogged absorbent glands, were of that kind ; and his own show case, James
Phipps, was a good instance. A large proportion of the variolous tests,
especially abroad, were done upon the inmates of orphanages and foundling
hospitals, who are notoriously subject to chronic swelling of the lymphatic
glands.
But the most obvious consideration, which should have been familiar to those who
first tried cowpox and tested it, was that the vaccine infection itself caused a
swelling and obstruction of the absorbent glands in the armpit and neck, and to
that extent made them incapable for the time, and in some cases for long after,
of taking up and passing into the lymphatic circulation another virus inoculated
under the skin at the same place. It was in Paris that this point was chiefly
urged
1 See Moseley's Commentaries on the Lues Bovilla. London, 1807.
150 THE VARIOLOUS TEST.
by the critics of the variolous test, and the point was at length conceded. In
England, it does not appear that the early vaccinators gave any heed to it.
Apart from the swollen and clogged state of the absorbent glands after cowpox,
the mere presence of a sore of any kind on the arm served to divert and obviate
the full action of a new infection. It was a common remark, in the earlier
period of inoculation with the smallpox, that the insertion of the matter by a
large and deep wound, which suppurated, and either became an issue or was made
one, tended to keep back the general eruption. According to Burges, not a single
pustule might appear "where the sores keep open " ; and again, "the extent and
duration of the primary variolous insertion would seem to have checked the
general eruption." The same experience is stated by Ruston in an inverted form,
which shows that he did not understand the significance of it: "We sometimes
find the wounds even of those who have afterwards very few smallpox, except just
in those parts [i.e., around the wound], exceedingly foul and very
ill-conditioned."1 It is difficult to understand why the original incision
should have ever been deliberately encouraged to become a rendering sore,
unless it had, as a matter of fact, helped to abrogate the eruption; the
fanciful theory of the time being that such an issue was an outlet for the
infectious matter pervading the system.
Now, the cowpox upon the arm was often such a discharging sore in the early
practice. Most of Jenner's original inoculations resulted in eschars and sores
that
1 T. Ruston, M.D., Essay on Inoculation, p. 55. London, 1767.
DISTURBING EFFECT OF SORES. 151
went on for weeks, and some of them resulted in quite large phagedenic
ulcerations. Cline, who made the first trial of cowpox in London, actually
intended to turn the resulting sore into an issue for the benefit of the chronic
hip-disease of the child on whom the experiment was tried. In the Stroud
experiment with matter from the same source (Stonehouse), which produced
Jenner's cases of phagedenic ulceration, we have a striking proof by the method
of difference : in the three cases which had mild and non-ulcerative cowpox, the
variolous test at the eighth day gave both the local pustule and the ordinary
fever with eruption, or, as the narrative says, the patients "went through the
smallpox in the usual way " ; in the other two cases, which had severe initial
cowpox and open sores for weeks after, the variolous test at the eighth day gave
the local pustule only, and when it was repeated after the cowpox vesicles had
actually become eschars or ulcers, it gave nothing at all. Such eschars and
ulcerations in the early practice were not uncommon, being the natural effects
of cowpox matter in the early removes from the cow.1 Thus in the series
published by Addington, of West Bromwich,2 there were ulcerations among his
first eleven cases, but none in the remaining fifty ; and the same event
occurred uniformly in the establishment of new stocks of lymph from the cow by
such experimenters as Estlin, Bousquet, and Ceely forty years after. Now, these
first vaccinations were just the cases upon
1 Henry Hicks (of Eastington), Observations on Dr. Pearson's
"Examination of the Report.'' Stroud, 1803, p. 43.
2 Practical Observations on the Inoculation of the Cowpox.
Birmingham, 1801.
152 THE VARIOLOUS TEST.
which the variolous test was systematically tried in Jenner's time; after it had
been tried upon a few cases at the outset, with an apparently satisfactory
result, it was tried more intermittently on those that followed, and it soon
ceased to be tried at all. Thus the early cases had often a condition of the arm
or arms which sufficed, according to analogy, to render the variolous infection
nugatory, apart from anything specifically antagonistic in the nature of the
sore arm.
In order to bring out all that is here asserted, let us imagine a parallel case.
Let us suppose that the glowing end of a cigar is firmly applied to an infant's
arm ; an eschar and an indurated sore will result, which may be called
cigar-pox.1 Let the variolous test be now tried, and there is every reason to
expect, assuming the lymphatic glands to be touched, that the result will be the
same as after cowpox. Of course the experiment can never be made ; but the
cigar-pox is in its pathology just as relevant to the smallpox as cowpox is.
Two other things in cowpox infection, besides the state of the lymphatic glands
and the sore; helped to check or render abortive the evolution of the inoculated
smallpox. One of these was the extent of the areola and the degree of
constitutional upset; the other was the occasional presence of the general
vaccinal exanthem, or eruption proper to cowpox. In the series of cases by Ward,
of Manchester (see p. 130), the only one which did stand the variolous test
after cowpox was a case in
1 This artifice is actually practised with success by Belgian soldiers
undergoing imprisonment, so as to get themselves placed on the sick-list for
venereal disease. See De Broen, Gas. des Hopit., 14 Aug., 1880.
INTERFERED WITH BY ERUPTIONS. 153
which the areola began on the eleventh day, became ' very extensive" and was
accompanied by "much fever," the test having been applied on the twenty-ninth
day. An illness such as that, in an infant of sixteen months, would hardly have
ceased of its effects in eighteen days; the system would have been sufficiently
preoccupied to make the evolution of a new virus improbable. That is a very
common type of case ; and it exemplifies one of the most obvious reasons why the
variolous test produced either no smallpox at all or a degree less of smallpox
than the variolation of the time produced in ordinary.
The vaccinal exanthem or skin-eruption proper to cowpox was a frequent incident
of the early days of vaccination, as it was afterwards found to be in Estlin's
experience with matter in the first removes from the cow.1 In Woodville's cases
at the Inoculation Hospital it got mixed up with the true pustular eruption of
smallpox which many of the patients had, and the significance of it was not
made out for a time owing to that confusion. But it was often observed in the
country practice of vaccination, where concurrent smallpox was out of the
question. Thus, of seventy cases vaccinated by Evans, of Ketley, near Shiffnal
commencing in May, 1799, no fewer than thirty-nine had an eruption.2 Evans
applied the variolous test in twelve cases only of his series of seventy, which
had doubtless included a proportion of the eruption cases. In one of the first
German trials, at Bremen, a third part of the cases had
1 Lond. Med. Gazette, xxii. (1838), p. 977 ; xxiv. (1839) P- 153-
2 Med. and Phys. Journ., ii. 310.
154 THE VARIOLOUS TEST.
a rash or eruption.1 Now, an eruption after cowpox has the same significance as
an eruption after the pox proper ; it is a secondary, or a sign that the
constitution has been touched by the infection. A person still under the
influence of the secondaries of cowpox would not be a likely subject for
smallpox engrafted on the top of it.
But even if we attach no constitutional significance to the proper eruption of
cowpox, the mere presence on the skin of spots or pimples or vesicles or blebs
would hinder the full evolution of smallpox by inoculation. In the essay by
Burges on the Preparation and Management necessary to Inoculation we read that
"cutaneous eruptions render a child an improper subject for inoculation until
those disorders are removed." That meant that the inoculation would either not
take at all, or would miscarry ; and in the time of Burges, they did not wish it
to miscarry. It is hardly necessary to accumulate evidence on the point. The
presence of any common eruption, even itch, was well known to prevent the cowpox
itself from taking. Jenner began, about the year 1804, to explain the failure of
cowpox by an ambitious doctrine of "herpes," which the profession gave no heed
to ; but it had this grain of truth in it, that an infection inserted under the
skin would not have a fair chance of being absorbed if the skin were already
engaged with an eruption even of the most ordinary kind. In so far as that was a
plea for the failure of cowpox, it was a plea for the failure of inoculated
smallpox. Only in those enthusiastic days the homely maxim of "sauce for the
goose, sauce for the gander," was unhappily lost sight of.
1 Hufeland's Journal, xiv. pt. i. p. 66.
CHAPTER 7.
THE FIRST APOLOGIES FOR FAILURE.
WHEN vaccination was passing through a storm of adverse criticism during the
smallpox epidemic of 1805, Jenner wrote to one of his friends,1 that nothing of
that kind ever shook his faith in cowpoxing. "And why ? I placed it on a rock,
where I knew it would be unmoveable, before I invited the public to look at it."
The metaphor is too pure to express the whole complex truth. Jenner placed his
doctrine on a rock in one sense, and on a shifting sand in another ; and its
security was just because it was on a mobile basis. That foundation was laid, as
he correctly states, before he invited the public to look at his invention.
The apologetics of vaccination began in the mind of Jenner before his project
was given to the world. The years of patient observing and proving, which have
been the subject of so much rhetorical nonsense on the part of so many otherwise
sane persons, were really a few years of indolent casting about by Jenner for
the means of meeting the obvious objections to the scientific whitewashing and
professional adoption which he intended for the vulgar cowpox legend.
All Jenner's
1 Letter to Dunning, 9th March, 1805, in Baron, ii. 29.
156 THE FIRST APOLOGIES FOR FAILURE.
medical neighbours knew that there was nothing more in the legend than the
verbal jingle of cowpox-small-pox, just as dog-rose and hound's-tongue were
charms against mad dogs or remedies for their bites. The alleged immunity of
poxed milkers from smallpox they knew to be a mere popular delusion, which did
not find the smallest justification in the experience of any medical man who had
seen much practice among the class of milkers. That was the common-sense
obstacle to Jenner's fanciful ambition to see cowpox inoculation substituted for
the ordinary inoculation of the time. Jenner resolved to circumvent that
obstacle, and all other obstacles of the evidential sort, by calmly asserting
that the ordinary spontaneous cowpox was spurious, and that the sort of cowpox
which alone gave immunity from smallpox was a derivative of horse-grease.
It is not easy to make out at what period of his "researches " Jenner called in
the aid of horse-grease. The Inquiry, as published in 1798, was pervaded by
horse-grease everywhere, but it is improbable that the equine source of true
cow's pox had figured to the same extent in the paper when it was sent to the
Royal Society some eighteen months before. At all events, the only experiment
that Jenner included in the first edition of his paper had been made from a
milkmaid, who had caught the pox from cows, which cows had been infected from a
cow (with "overstocked " udder) bought at a fair, which circumstance was
claimed afterwards by Jenner himself, although not with reference to his own
first case, to be one of the common occasions of generating spontaneous or
spurious cowpox. He could hardly have failed to see that Sarah Nelmes, and
consequently
TRUE AND SPURIOUS.
157
James Phipps, would be found out to have had cowpox of the spontaneous
market-cow spurious sort, if the doctrine of true and spurious had appeared in
the first draft of his paper in all the precision of clean-cut dogmatism which
it afterwards wore.
It seems more likely that the year 1797 saw the first serious adoption of the
great genuine-and-spurious plea, and of horse-grease as the one and only
authentic source of the genuine. The opening of the Inquiry is on horse-grease,
and so is the conclusion of it. We may take it, then, that the doctrine of
spurious and genuine, and of a horse-grease origin as the correct mark of the
latter, was slowly developed, and not really formulated until it appeared in the
Inquiry in June or July, 1798. Even in that essay itself, although the
horse-grease origin of cowpox pervades the argument, yet the doctrine of true
and spurious, or horse-greasy versus spontaneous cowpox, is relegated to a
quiet footnote on the seventh page, and not once referred to again until the
last page, when true and spurious cowpox are thus printed, with a reference to "page 7" in a note, the evidence of genuineness in that connexion being the
marvellous case of the sucking colt with erysipelas and abscesses of his thigh.
"Thus far have I proceeded," he concludes, "in an inquiry founded, as it must
appear, on the basis of experiment; in which, however, conjecture has been
occasionally admitted in order to present to persons well situated for such
discussions objects for "a more minute investigation."
The last clause was Jenner's way of offering to shift his ground, if the course
of events and the vulgar prejudices of mankind should make it desirable for him
to
158 THE FIRST APOLOGIES FOR FAILURE.
do so. Woodville had, in fact, warned him, before the Inquiry went to press, to
cut out everything in it relating to horse-grease,1 no doubt for the reason
which Pearson afterwards gave, that "the very name of Horse-grease was like to
have wrecked the whole concern." But these ingenuous Londoners did not know how
essential the horse-grease doctrine of cowpox was in Jenner's private
calculations. One of his veterinary critics saw clearly that it was a factitious
doctrine, and concluded that Jenner had adopted it "rather out of compliance
with the ideas of the people he was obliged to consult, than as the result of
his own mature reflection."2 But it was against the wishes of others that he
retained it, in all the prominence that he had given to it, as the stamp and
seal of the genuine form; it was "of the greatest consequence to point it out
here, lest the want of discrimination should occasion an idea of security from
the infection of the smallpox which might prove delusive." And therewith began
the long chapter of vaccination apologetics.
The course of events soon bowled over Jenner's poor strategic plea that all
genuine cowpox came from horse-grease. Woodville supplied the world with vaccine
after Jenner had failed to do so ; and not only did Woodville and Pearson
disclaim the horse-grease doctrine, but it was quite out of the question that
the outbreak at the cowhouse in Gray's Inn Lane, whence they got their vaccine,
should have had such an origin. Their cowpox was the ordinary "spontaneous"
cowpox,
1 Fraser, Med. and Phys. Journ., 1805, p. 10.
2 Lawrence, Med. and Phys, Journ., i. 115.
CHANGE OF GROUND.
159
which had been the only kind known until Jenner suddenly denounced it as
spurious, and has been the genuine cowpox of Ceely1 and all other modern
authorities. Clearly, then, Jenner's original distinction between spurious and
genuine could not be maintained ; otherwise he would himself be open to the
charge of using spurious cowpox, inasmuch as he was using matter given him by
Woodville, having none other to use.
Jenner's next appearance in print was in April, 1799, when he came to London and
published his Further Observations. Spurious cowpox is the grand theme of the
second essay ; but the doctrine of spuriousness is no longer the simple major premiss of "all non-horse-grease cowpox is spurious." Indeed, any one reading
Jenner's newest publication rather carelessly, and without having read the
Inquiry, would not unnaturally suppose that horse-grease was itself a source of
spurious cowpox. He gives "the sources of a spurious cowpox " as four in
number:—
1. Pustules on the cow's nipples or udder, which
pustles contain no specific virus.
2. Matter which had originally possessed the specific
virus, but had suffered decomposition either from putrefaction or from some other cause less obvious to the
senses.
3. Matter taken from an ulcer in an advanced stage,
which ulcer had arisen from a true cow-pock.
4. Matter produced on the human skin from some
peculiar morbid matter generated by a horse.
Now, a careless reader, or one of those readers who take
1 See Natural History of Cowpox, p. 60.
160 THE FIRST APOLOGIES FOR FAILURE.
their impressions from glancing over the leaves, might easily go away thinking
that No. 4 was the obnoxious horse-grease itself. It is difficult to say what
the fourth source of a spurious cowpox really was ; most probably it was
horse-grease which had not undergone the mystical modification by being grafted
on a cow. At a later part of the essay, Jenner touches on the objections to his
horse-grease doctrine of genuine cowpox. He does not now fight strenuously for
it, although he fights more strenuously than he had ever done for the radical
separation of genuine cowpox from spurious. But while he insists upon a genuine
cowpox, he forgets to say what it is, or how it is defined. He hints that he
might have been mistaken in deducing cowpox from horse-grease ; he is willing to
consider all the objections that had been taken to his hypothesis ; he will
merely repeat there the six considerations that had weighed with his scientific
and candid intellect in giving horse-grease the prominent position in the
doctrine of cowpox which it occupied in the Inquiry. In the third pamphlet,
Continuation of Facts and Observations, which came out eight months later
(December, 1799), horse-grease is not once mentioned; and in the short
historical sketch which Jenner drew up, of the dawning, development, and
perfecting of the great vaccination idea in his mind during years of quiet and
fruitful work in the peaceful retirement of, Berkeley (On the Origin of the
Vaccine Inoculation, 1801), there is not one word said about horse-grease. The
thousands who took their ideas from that manifesto, or from the exact repetition
of it in the form of evidence before the Parliamentary Committee of 1802, would
never have believed that horse-grease was
FOLLOWERS LEFT IN THE LURCH.
161
the original corner-stone of the whole project and doctrine of cowpoxing. The
truth is, that the notion of "genuineness " and "spuriousness," which was all
that he ever wanted to establish through horse-grease, was soon able to run on
its own legs without support from pathology or from anything else. "Spurious"
became a cry; and, as a cry, it could be used with far more freedom and far more
effectiveness if it were uncommitted to definitions, which, as Jenner's old
master, John Hunter, has said, are, "of all things on the face of the earth, the
most cursed."
But while Jenner himself dropped horse-grease, a number of persons, who were
simple enough to take his magnum opus seriously, spared no pains to show that
the horse-grease doctrine was right.1 These partisans were more Jennerian than
Jenner himself; and one can only guess at their queer state of mind when they
found their hero telling the story of his many years of patient and laborious
research, and saying not one word about horse-grease from first to last. This
story, which is the principal epitome and canonical writing, as it were, of
vaccination apology, will now be given.
The paper On the Origin of the Vaccine Inoculation is dated from Bond Street,
the 6th of May, 1801. Jenner was now a great personage, had been presented to
the King a year before, and at the time of his writing was in full career as a
lion of London society. It would be charitable to assume that vanity had turned
his head
1 Sir Christopher Pegge, of Oxford, Lond, Med. Rev., v. 76 (Oct. 10, 1800) ; J.
H. Grose, of Winslow, Med. and Phys. Journ., iii. 294 ; John G. Loy, M.D., of
Aislaby, Experiments on the Origin of the Cowpox. Whitby, 1801.
162 THE FIRST APOLOGIES FOR FAILURE.
and made him untruthful; at all events, the piece is a tissue of lies.1 He
professes to give a "concise history" of the origin of vaccine inoculation,
the conciseness being enhanced by a charming naivete and heartiness of manner.
The reader is reminded by many simple touches of the long period of anxious
thought that this admirable man endured until he came before the world with his
beneficent discovery ; if dates or other particular circumstances are seldom
given, that is merely the writer's artlessness and modesty.
Jenner's first difficulty, in approaching the great cow-pox-smallpox problem
which he afterwards solved to his own and the world's satisfaction, was one that
might well have deterred a better-instructed and more sensible man. He found
that some cowpoxed milkers had taken smallpox, just as if their previous
cowpoxing were purely irrelevant. In his concise narrative, he would have us
believe that he knew that very well, of his own knowledge, and candidly
admitted it ; it was this that " ed me to inquire among the medical
practitioners, who all agreed that cowpox was not to be relied upon as a certain
preventive of the smallpox." The real sequence of events was that Jenner, more
imaginative than his medical neighbours and colleagues, used to air the popular
fancy about cowpox-smallpox at their medico-convivial meetings; whereupon the
medical men who had experience to guide them would good-naturedly produce case
after case which showed that the popular
1 The Edinburgh Review (1806, October, p. 35) says that this "simple and
interesting narrative " is the " best and most authentic account of his
discovery."
THE HISTORY AS IT OUGHT TO HAVE BEEN. 163
belief, in so far as it was held even by the vulgar, was a mere verbal illusion
; Jenner, however, was so persistent in arguing against the facts that, as he
told Baron, the members of the Society threatened to expel him as a bore.1 That
was how Jenner came to know so well that all cowpoxed milkers had not been
protected from smallpox.
For a while, the concise narrative goes on, these exceptional cases damped his
ardour, but did not extinguish it. If we are to believe the story that he had
occupied his thoughts with this question ever since he was a pupil at Sodbury,
the statement means that his ardour was damped a very long while, something like
five-and-twenty years. At length he "had the satisfaction to learn that there
were some varieties of spontaneous eruption, all of which produced sores on the
milkers." Only one of these was the true cowpox ; the others were spurious, as
they possessed no specific power over the constitution. Here, then, was the
obvious explanation of some cowpoxed milkers taking smallpox ; their cowpox
sores had been spurious.
Of all the many sly and impudent tales that Jenner told to the medical
profession and to the public, the short sentence just quoted is the most sly and
the most impudent. He trusted, and rightly trusted, to general readers, and even
medical editors, having short memories. Before we state the real development of
doctrine about true and spurious cowpox, let us see how this concise narrative
was received by the principal London organ of medical opinion. We are apt,
says the editor,
1 Life of Jenner, i. 48, 49.
164 THE FIRST APOLOGIES FOR FAILURE.
to forget the throes and travail of a discovery after we have become familiar
with the perfected achievement: "Who now wonders at the discovery of America,
or the Circulation of the Blood ? There is, however, a period between the
conception of a discovery and its mature birth fraught with more pangs than war
or women know ; and there is no light in which the human mind can be viewed more
interesting than during this anxious period."1 Rhetorical rubbish, instead of
sober criticism. The very same editor had reviewed or analysed the Inquiry only
two years before ; the Inquiry was Jenner's magnum opus, his deliberate
production, the mature birth of his discovery, after "more pangs than war or
women know"; and the ever-recurring burden of the Inquiry is that true cowpox
was not a spontaneous disease of the cow at all, but an infection derived from
the horse ; while the spontaneous cowpox is mentioned by name in two places, and
a third time by implication on the last page of the essay, only to be dismissed
as spurious. And now, in the concise narrative of the slow incubation of his
ideas and the gradual perfecting of his researches, Jenner calmly informs the
world that he long ago discovered the true cowpox in one of the varieties of the
spontaneous malady, while he keeps silence about the elaborate doctrine of the
Inquiry of 1798, that all spontaneous cowpox was spurious, and the only true
cowpox a derived infection from the horse. The audacity of this proceeding will
show all the more if we recall the fact that his second essay, the Further
Observations of 1799, actually reveals the disingenuous workings of his
1 Med. and Phys. Journ., v. 505.
MYTHICAL HISTORY. 165
mind in choosing a new ground for the doctrine of "spuriousness" under the
pressure of his own and other failures at Stroud, in December, 1798, of
criticism by Ingen-housz, of the dislike of horse-grease generally expressed,
and of his having to adopt Woodville's spontaneous cowpox as the "true
Jennerian" for want of any stock of his own.
The "concise history" then proceeds : "But that was not the worst obstacle
and check to my fond and aspiring hopes." Of course fond and aspiring hopes
carry us back to the obscurity and discouragement of early days. This worst
obstacle was that some milkers who had been infected even with the true cowpox
had caught smallpox afterwards. Now in Jenner's classical work, in the great
Inquiry itself, as well as in the succeeding essays, there is not one word said
of any milker having been infected with true cowpox and afterwards with
smallpox, even if we allow Jenner to have as many definitions of "true" as
there are points in the compass.
What he is pleased to describe as the "worst obstacle to his fond and aspiring
hopes" is so absolutely an invention to serve a doctrinal apologetic purpose
in after years, that he cannot adduce a single illustration of it among the
original cases of cowpoxed milkers upon which his theory and project were based.
But he knew of such cases, all the same, in the days of his fond and aspiring
hopes ; and they led him to reflect "that the operations of Nature are
generally uniform, and that it was not probable the human constitution (having
undergone the cowpox) should in some instances be perfectly shielded from the
smallpox, and in many others remain unprotected. I resumed my labours
with redoubled
l66 THE FIRST APOLOGIES FOR FAILURE.
ardour. The result was fortunate : I now discovered that the virus of cowpox was
liable to undergo progressive changes, from the same causes precisely as that
of smallpox; and that when it was applied to the human skin in its degenerated
state, it would produce the ulcerative effects in as great a degree as when it
was not decomposed, and sometimes far greater; but having lost its specific
properties, it was incapable of producing that change upon the human frame which
is requisite to render it unsusceptible of the variolous contagion." This was
none other than the main argument of Further Observations (April, 1799), a plea
which he had to trump up in order to answer Ingen-housz and to cover his own
ulcerative failure with the Stonehouse cowpox in December, 1798, and the still
more awkward, because more notorious, failures of Thornton and Drake, of Stroud,
with matter from the same source.
Having thus carried us over the many years of preparation and parturient
travail, Jenner next brings us, in the concise history, to his first
experimental trial of cow-pox, the famous case of James Phipps on 14th May,
1796. Again vast labours and mental anxieties interpose (represented, in
reality, by the memorable attempt to give a young horse the grease by keeping
him in the stable and feeding him on beans), and we come down to the month of
March, 1798, to the case of the child Baker, who was horse-greased, and died in
the workhouse, and to the half-dozen or more cases of inoculated cowpox in other
children. The narrative then proceeds: "The result of these trials gradually
led me into a wide field of experiment, which I went over not only with great
attention but with painful solicitude. This became uni-
WOODVILLE SAYS NOTHING.
167
versally known through a treatise published in June, 1798."
In so far as any wide field of experiment, subsequent to the trials of March and
April, 1798, comes into the Inquiry published in June, 1798, the above statement
is the mere coinage of his brain. He hurried off to London in April, 1798, with
the draft of the Inquiry in his pocket, without waiting even to ask the great
question of his cowpoxed patients, namely, whether they could stand the
variolous test. If there were any painful solicitude made known through the
Inquiry, it was the solicitude of having to consider the importunity of
Woodville, after he had read the manuscript of that work, that horse-grease
should be entirely cut out from the programme.1
Woodville was one of the few men in the profession who knew almost as much of
the secret history of Jenner's discovery as we know now; and he could easily
have shown up the concise narrative for the romance which it certainly was. But
he was a man of quiet disposition, far more inclined to efface himself than to
enter into a controversy with such a man as Jenner; and he never wrote anything
in the vaccination discussions beyond a dignified and candid explanation of the
smallpox eruptions which befell his first vaccinated cases at the Inoculation
Hospital, and had been diligently turned to account by Jenner in order to
discredit Woodville's share in the discovery.
The " concise narrative " ends with the publication of
1 H. Fraser, M.D. (Woodville's pupil and successor at the Smallpox Hospital),
in Med. and Phys. Journ., 1805, p. 10.
168 THE FIRST APOLOGIES FOR FAILURE.
the Inquiry ; it says nothing of the Further Observations of 1799—for the
sufficient reason that it refers back the extemporized argument of that work to
the mythical period of the discoverer's early wrestlings with his great idea.
The cry of "spurious lymph" was the great excuse for the failures of cowpox to
protect from smallpox, as well as for the ulcerous and other bad effects of that
infection itself. It is unnecessary to show that the plea of "spuriousness"
was a transparent piece of sophistry,1 elastic enough to cover all failures and
disasters whatsoever. What we are here concerned with is the way in which the
profession received this plea, the scrutiny and discussion they applied to it in
general, and the evidence they required for each spurious case as it arose. Let
us remember that cowpoxing was then a new thing on its trial, and that there is
always a presumption, in the minds of a later generation who take a thing on
trust, that a new project, especially if it be a scientific one, had been
thoroughly tested and debated on all sides before it received the general assent
of its own age. We have already seen what they made of the variolous test; we
have now to inquire into the reception which they gave to the apologetic plea of
spurious cowpox and spurious lymph.
The first person to bring Jenner to his bearings about "spurious " and
"genuine" was Dr. Ingen-housz, although it was spurious smallpox that
Ingen-housz had occasion
1 So far as concerned cowpox in the cow, Jenner was plainly told in the report
of the College of Physicians (1807), that his "spurious" doctrine was one by
which "the public have been misled, as if there were a true and a false cowpox."
"SPURIOUS" IMPROVED UPON. 169
to protest against. This episode between Jenner and Ingen-housz might well have
been forgotten, had it not been the first suggestion of Jenner's later doctrine
of spurious cowpox. In replying to Ingen-housz, both by private letter1 and in
identical terms in the Further Observations, he not only re-affirms the absurd
doctrine of smallpox made spurious and ceasing to be smallpox from some
imaginary putrefactive change, but he has the assurance to say that the cowpox
in Ingen-housz's case of the Wiltshire farmer who had afterwards taken smallpox,
must have been also spurious owing to the same putrefactive change, for it was
stated that the cows gave out a stench from their ulcerated teats. Ingen-housz,
as we have remarked in a former chapter, saw that his correspondent was either a
fool or a knave, and took no farther notice of him. But it was his sharp rebuke
over the spurious-smallpox doctrine that led Jenner on to his equally audacious
doctrine of cowpox made spurious by putrefaction or "some other change less
obvious to the senses." Jenner does not say that the putrid smallpox virus
failed to produce an infection with the objective characters of smallpox, any
more than he says that spurious cowpox matter failed to produce the correct
vesicle and other developments of cowpox. He merely says that the disease so
induced failed in both cases to protect from future smallpox. He is guilty of
so transparent a begging of the question that it is really hard to decide
whether folly or knavery entered most into his excuses.
The same answer that Jenner made to Ingen-housz's
1 Baron, i. 294.
170 THE FIRST APOLOGIES FOR FAILURE.
case of the Wiltshire farmer was made, on his behalf, to the notorious case of
Mr. Jacobs, of Bristol, which at one time staggered the faith of Dr. Beddoes and
of Dr. John Sims. That case received far more publicity than the case adduced by
Ingen-housz, and it was answered by Jenner's nephew and assistant, Henry Jenner,
in an Address to the Public, a quarto pamphlet of twenty pages, which contains,
along with other puerile matter, the following statement of the doctrine of
spurious cow-pox :—
"Every case that has been brought forward to undermine the theory we defend,
we can prove to a demontration was not one of the genuine kind. There are
three diseases called cowpox, only one being genuine. Animals exposed for sale
acquire inflammation of the udder, which terminates in eruptions on the teats
and udder and affects the milkers with a loathsome disease on the hands, arms,
and shoulders. [The very circumstances in the case of Sarah Nelmes, who
supplied James Phipps.] The forehead sometimes does not escape, from the
servants leaning against the udder. This disease may affect the same person
several times, but it will never prove a preventive for smallpox. A case of this
kind occurs in the city of Bristol : a Mr. Jacobs, attorney-at-law, was
extensively affected twice with this disease (which, from his total ignorance of
real cowpox, he has called by that name), but it did not prevent his being
afflicted with a subsequent severe smallpox."
The public and the profession were vastly impressed with the idea that the
Jenner family alone knew what real cowpox was. Sims had been approached
privately before this, and had acknowledged that Jenner's nephew
FOSBROKE PUT UP TO DEFEND. 171
had proved the case of Mr. Jacobs to be spurious. Beddoes, who first took up the
Jacobs case, was even brought to book by Jenner's parson, Fosbroke. The cowpox,
said this bold cleric,1 which Mr. Jacobs had contracted in youth, was
undoubtedly spurious : "I speak from actual observation [of Jacobs?], Dr.
Beddoes from description only." The same clerical advoate had the assurance
to reply to the case of the Oxford college porter, published by Dr. Hooper,
physician to the Marylebone Infirmary.2 Fosbroke knew that the cowpox which the
porter had contracted in Wiltshire, five years before he died at Oxford of
confluent cowpox, was spurious, because Hooper had stated that the sores on the
hands "were larger than those of the smallpox, and ended in a brown crust." The
clerical proof that this, the correct mark of cowpox, indicated the spurious
disease, was an indirect one ; Fosbroke's own dairymaid had caught cowpox only
two months before at Mr. Walkeley's farm, whither she had been sent to learn the
art of milking ; in her case also the pustules were larger than those of
smallpox, and ended in a brown crust. "That I should err in supposing this a
spurious disease is impossible. My own children were at that very period of time
infected with the true cowpox, the inoculated pustule being then in a state of
complete maturation. The points of difference between the two diseases were
visible, though unnecessary to be repeated here, as they are clearly described
in Dr. Jenner's publications." Fosbroke wrote again,3
1 Lond. Med. Rev,, Aug., 1799. 2
Ibid., Letter of 12th July, 1799. 3 Med. and
Phys. Journ., iii. (1800) p. 249.
172 THE FIRST APOLOGIES FOR FAILURE.
on 11th Feb., 1800, and disclosed a fact which he must have known at the time of
his writing in July: "I have mentioned virulence in cowpox. Owing to the
neglect of advice, my own child had it exceedingly severe," the "pustules"
requiring to be treated with vitriolic acid; so that the points of difference
between the spurious form on his dairymaid's hand and the genuine on his child's
arm were perhaps not so very great, all things considered.
Another member of the family employed to urge the "spurious-or-genuine " plea
was the Rev. G. C. Jenner, of Burbage, Wilts. He wrote a paper1 on Spurious
Vaccine, "with an ardent wish that my remarks may throw a ray of light on a
subject which so intimately concerns the dearest interests of humanity." In two
instances he had seen the perfect and the spurious cow-pox co-existing in the
same person, for which strange thing he did not presume to assign a cause. He
had vaccinated himself fifty times before he produced any result, and when he
did succeed at the fiftieth time, the vesicle was spurious. It was by pricking
the back of his hand with a lancet, in order to show a young lady of timid
disposition how simple the operation was, that he eventually raised the genuine
cowpox vesicle. After these curate-like experiences, he comes to the larger view
of the question, which so intimately concerned the dearest interests of humanity
:—
" From whatever source the spurious pustule may arise, there is this
satisfaction, that it is very easily distinguished from the perfect disease
by those who
1 Med. mid Pkys. Joun.,vii. 201.
DEFINITION OF "SPURIOUS" PROMISED. 173
have paid any attention to the vaccine practice. The features of the genuine
disease are strongly marked, and require but little discernment to be familiarly
acquainted with them."
The medical profession, however, were not quite so clear about the differences
between genuine and spurious, having less discernment than this reverend
cowpoxer. In the summer of 1801 the editor of the Medical and Physical Journal1
intimated that "ingenious artists are now at work, in the hope of being able to
give accurate representations of the true and spurious pustules." In a later
number, Dr. Stokes, of Chesterfield, wrote2 that he was glad to hear of the
artists being at work, for such pictures were much needed ; there were two forms
of inoculated cowpox, the vacciola scutellata and the vacciola leprosa, and it
was not easy to distinguish them ; nine persons at Chesterfield had taken
smallpox after being vaccinated with vacciola leprosa, and two of them had died.
In the beginning of 1802 the editor of the Medical and Physical Journal again
writes :3 "We cannot help regretting on this occasion that Dr. Jenner's
engagements prevent him from giving to the public those very accurate and
beautifully coloured plates which he is now preparing to accompany the next
edition of his works. Those plates would indeed be a rudder and a compass by
which the practitioner might steer with safety." Whether the plates of
spurious and genuine cowpox
1 Vol. vi. 201.
2 Under date 3rd Oct., 1801.
3 Vol. vii. 187.
174 THE FIRST APOLOGIES FOR FAILURE.
really were very accurate and very beautiful, there was never any means of
judging ; they were never published, nor did the projected new edition of
Jenner's works on vaccination ever see the light. The profession went drifting
on without the rudder and compass which the sapient editor thought these plates
would have supplied them with. The rudder and compass which the profession
really needed were the rudder of pathological principles and the compass of
rigidly scrutinized facts; these together would have guided them to the
conclusion that the project for exterminating smallpox by means of cowpox was an
imposture on Jenner's part and an illusion on theirs.
The use made of the plea of "spurious" to stop all free inquiry into the merits
of Jenner's claims is illustrated in the medical journals of the period. Thus
Dr. John Fawssett, of Horncastle, Lincolnshire, sends to the Medical Journal1
three cases of children who took smallpox after being vaccinated ; whereupon the
editor, in the exercise of his privilege, designates the cases "spurious" in the
headlines and title. The same liberty is taken with cases immediately following,
by Dr. John Stevenson, of Kegworth, Leicestershire. In a subsequent number,2
Stevenson remonstrated, under date 17th November, 1801 :—
" May I be permitted to solicit your reasons for denominating my cases of
cowpox, as related in a former number, spurious " He then offers some "cursory observations" on the vague use of the epithet "spurious
1 Med. and Phys. Journ.,vi. 117.
2 Ibid., vii. (Jan., 1802), p. 9.
EXALTED AND RESPECTABLE NAMES. 175
or imitative, as expressive of a deceptive species of cowpox, and on the
absolute want of its diagnosis." Stevenson writes like a scholar and a practised
logician ; his masterly criticism of the loose usage of the Jennerians and their
high-placed abettors ought to have opened the eyes of the profession to the
illusions that were being practised with names, only that the profession
unfortunately had no great wish to have its eyes opened.
Two instances of this prevailing temper will serve to show how irretrievably the
long career of apologies had been entered upon. Dr. Denman, who had come forward
to give cowpoxing his weighty support in March, 1800, wrote another letter in
June following:1 "Since that time," he says, "there have been many vague reports
of cases, in which it was asserted that several persons who had been inoculated
for the cowpox had afterwards been actually infected with the smallpox.
Presuming that some error in the nature of the matter inoculated, or in the
conduct of the operation, must have been the cause of such opposite conclusions
(if there was any foundation for the reports)," he begs to send for publication
a letter from the Earl of Derby intimating the successful vaccination of two of
his lordship's own children. Denman knew well that, in a country like England,
these two infant Stanleys were the very best form that logic could take ; and in
the same number of the Journal the editor triumphantly refers a sceptical
Newcastle correspondent to the "exalted and respectable names which appear in
the first pages of this number." The Newcastle Advertiser had
1 Med. and Phys. Journ., iv. p. 1.
176 THE FIRST APOLOGIES FOR FAILURE.
published a paragraph against vaccination, which the editor of the London
professional organ advises his northern colleague to treat after the following
analogy : "A paragraph or letter very similar appeared a few weeks ago in a
London paper ; but the Faculty here treated it with the silent contempt it
merited ; being persuaded that the declamatory effusions of such writers, when
opposed to the opinions of Jenner, Woodville, Pearson, Denman, Saunders, Cline, Keate, Ring, Knight, Abernethy, and many others equally respectable, have no
weight with a discerning public."
The other sample of the professional mood shall be taken from an article by
Dunning, of Plymouth, in the same Journal for January, 1802 :—
"Reports the most fatal to its interests continue daily to accumulate, and are
circulated with much earnestness, and even apparent satisfaction, by at least
the sceptical, the anile and the foolish, uncontradicted and unchecked." There
had been misrepresentations at Plymouth, and these had spread through Cornwall
; they had been counteracted, but only for a ti-me, by the strong testimonial in
the Medical Journal, and by others in the Sherborne and Exeter papers. "Let the
public mind be no longer distracted by the circulation of dreadful accidents
and numerous failures [why not ?] which are so eagerly caught at, edited, and
improved by the ignorant and the prejudiced." He then raises the grand issue
with a preciseness that leaves nothing to be desired : "The genuine vaccine
lymph does, or does not, possess an absolute preventive power against variolous
contagion. Such power is, or is not, a law of Nature. The protection, if it
affords protection, cannot be casual,
DOUBLE USE OF THE "SPURIOUS" CRY.
177
it must be regular and determined." 1 Dunning had no doubt at all that such
protective power was the law of Nature; if the lymph were genuine, it would
protect; whatever lymph failed to protect must have been spurious.
One point remains to be made clear, before we leave this doctrine of
spuriousness, by which the profession deceived themselves or allowed themselves
to be deceived. It had not one great application, but two. In the years 1801
and 1802 the doctrine was mostly in request to explain away failures to protect,
or, in other words, cases of smallpox caught in the ordinary way by those who
had been cowpoxed ; for the epidemic was then reviving a little from the
periodic lull which had happened to correspond with the first trial of Jenner's
nostrum. But in 1799 and 1800 there had been another use for the cry of "spurious" ; it was then wanted to silence the clamour which threatened to arise
owing to the number of ulcerated arms. These were a very common experience, if
we may judge from the narratives of the more candid. Thus, Addington, of West
Bromwich, one of the first to publish his experiences of Woodville's lymph, had
five ulcerated arms in his first eleven cases.2 Evans, of Ketley, near Shiffnal,
who was supplied by Addington, says:3 "Those few patients whose arms were most
inflamed were of the first that were infected, which I attributed to the cold
N.E. winds, as they were disposed to become troublesome ulcers."
1 Med. and Phys. Journ., vii. 3.
2 Practical Observations on the Inoculation of the Cowpox.
Birmingham, 1801.
3 Med. and Phys. Journ., ii. 310.
178 THE FIRST APOLOGIES FOR FAILURE.
Brown, of Hatton Garden, wrote to the Gentleman's Magazine (May, 1800, p. 433),
that "nasty, ugly, and inveterate ulcers have remained in the arm long after." Stromeyer, of Hanover, one of the first to try the new inoculation on the
continent, got matter from Woodville, and apparently also from Jenner: "The
Gloucester matter frequently occasioned ulcerations of the inoculated parts of
a tedious and long duration, which the former matter never did."l
He had
therefore given up Jenner's stock, which was, after all, only Woodville's
altered for the worse in character in a series of transmissions. Wilke, of
Brandenburg-an-der-Havel, had numerous cases of ulcers with elevated edges and a
bacon-like floor, sometimes larger than a half-thaler piece.2 Cappe, of York,3
admitted that "in some instances the crust separates and leaves a spot
unhealed, like that of an issue. In some of the earlier inoculations, these
sore places became troublesome, but at that time the proper treatment was not
discovered."
The most famous series of ulcerated cowpox arms happened among a rather poor and
querulous set of people in Thunderbolt Alley, Clapham, in the
fall of the year
1800 ;4 the parents of the poxed children were "much prejudiced, full of
invective, and refused to converse reasonably." The lymph was of correct
pedigree, and had been taken from the arm of a gentleman's
1 Letter of 14th March, 1800, in Med. and Phys. Journ., London,
iii. 474 ; also Hufeland's Journal, x. pt. 3, p. 106.
2 Med. Chirurg. Zeitung, 1801, ii. 424.
3 Med. and Phys. Journ., iv. 434. See also Ibid., v. 25 (letter to
York Herald).
4 Lond. Med. Rev., 1801 (Jan.), p. 276.
NOT COWPOX, BUT ULCERATION.
179
child ; only it had been taken after the crust began to form on the vesicle, and
it therefore represented a late type or a full cycle of cowpox, coming near to
that of cowpox on the cow herself or on the milker. The effects were erysipelas,
rapidly spreading ulceration, and sloughing ; a woman, aged thirty-five, had a
large, irregular, oval sore, with elevated edges of a livid colour. We now know
that such effects can be produced at will by systematically using lymph from a
late period of the pox, or, in other words, by using the infective matter in a
state fully representative of the cow's ulcerous affection.
But let us observe how such an untoward incident was explained away. Blair, the
editor of the Medical Review, said that it arose from "this spurious sort, or
from a violent matter derived from the cow." Dr. Lettsom, a leading physician,
and a fussy or influential person among the charitable, rushed to the help of
the endangered cowpox project with a letter1 dated 25th November, 1800 : "The
disease," he assured the public, "was not cowpock, but morbid ulceration,
originating from the purulent matter formed under the scab or dried pustule of
the cowpock." Lettsom, whose writings prove him to have been something of a
windbag, did not know what he was talking about.2 If the subject had been a
suitable one for conundrums, Lettsom and such as he would have been in their
element. When is the cowpox not the cowpox? Answer : (1) When it fails to
protect
1 Med. and Phys. Journ., iv. 567.
2 Observations on the Cow-Pock. By John Coakley Lettsom,
M.D, LL.D, 2nd ed. London, 1801.
180 THE FIRST APOLOGIES FOR FAILURE.
from smallpox ; (2) When it produces "morbid ulceration."
Besides the apologetic plea of spurious lymph, the excuse was sometimes put
forward that the smallpox ensuing was not smallpox but something else. Thus,
Bevan of Stoke-on-Trent sends two cases of children who had been vaccinated on
the 12th of January because their mother had confluent smallpox, and had
themselves sickened for that disease on the 23rd and 24th respectively, the one
having sixty pustules on the 28th, and the other, twenty on the 29th, "exactly
like smallpox in every respect." To this perfectly credible recital the editor
of the medical journal coolly appends a note : "We think this eruption was not
variolous."1 The common explanation of an eruption of the milder sort was that
it was really chickenpox, even if the circumstances of infection should have
suggested smallpox.2 At a later period that excuse grew into the doctrine of varioloid or "modified" smallpox, especially in connexion with the epidemic
in Scotland in 1818, described by Thomson.3 In the Vienna school the same mode
of reasoning was carried so far that varicella, the learned name of chickenpox,
actually came to be used as the equivalent of discrete smallpox or varioloid,
or "modified " smallpox (e.g., in Hebra's writings), and continued to be so
used down to recent times.4
1 Med. and Phys. Journ, v. 455 (nth Feb., 1801).
2 Forbes, Ibid., vi. 314.
3 See chapter 13.
4 In 1871 the writer had an attack of illness in Vienna, caught
while attending the smallpox wards of the Allgemeine Kranken-
MYSTICAL SCIENCE.
181
Other and more subtle excuses for failure were made in Germany (see chapter
9.); but the two stock English pleas were, either that the lymph was spurious,
or that the ensuing disease was not smallpox. The nearest approach to the
refinements of the Germans occurs in a case in which Sir Joseph Banks played a
part. Being personally interested in a child in the country who had caught
smallpox six months after vaccination, he wrote to the medical attendant, Dr.
Harrison, of Horncastle, and received the following explanation : The child had
been vaccinated successfully, and others in the house had in turn been
vaccinated from her. Now these latter did not
intake smallpox on the occasion when their vaccinifer did, although they were in
the same house ; "hence it appears that Fanny communicated a security against
the smallpox to others, although she herself remained liable to its influence."
With this mystical reasoning the good president of the Royal Society would
appear to have been well content, for he allowed the letter which his inquiry
had elicited to be published in the Medical Journal.1
Such, then, was the programme of excuses which catme to be generally
adopted for the failure of cowpox.
haus. The late Professor Skoda, who made the diagnosis during the eruptive fever
and when the eruption was appearing, used the puzzling term "varicella," which,
to an English student, had no other meaning than chickenpox. The eruption
developed into the ordinary pustules of smallpox and ran the ordinary course.
The diagnosis was so made, doubtless, on account of the existence of an obvious
vaccinal mark on the arm.
1 Med. and Phys. Journ., v. (1801), p. 108.
182 THE FIRST APOLOGIES FOR FAILURE.
As Jenner said, he had placed it on a rock before he invited the public to look
at it. The patient thought, etc., which he gave to the subject before he wrote
on it was merely to invent the plea of "spurious." That plea occupied a great
part of the Inquiry, in connexion with the horse-grease doctrine of genuine
cowpox ; and it occupied the whole of the Further Observations, in connexion
with an entirely new and hitherto unheard-of doctrine of what was genuine and
what was not. As he employed some of his following to give plausibility to his
invented name of "smallpox of the cow," so he employed others of them to spread
abroad the doctrine of spuriousness. In both matters he found the profession
only too willing to be deceived. With the very first trials of cowpox begins the
long course of hard swearing in defence of a radically mistaken and erroneous
doctrine, which the medical profession has been able to pass off for expert
testimony, on the strength of the excellent maxim,
Cuique in arte sua credendum
est. We have next to see how deeply the English profession was committed, by its
leaders, to Jenner and his doctrines within the first year, or the first two
years, of the novelty being tried.
CHAPTER 8.
GENERAL ASSENT IN ENGLAND.
WE have thus far seen what kind of evidence the profession had before them, on
the protective power of cowpox, and what kind of apologies they were prepared
to make for failures and disasters. They never went deep enough into the anatomy
and pathology to realize what sort of pox the cowpox actually was, and they had
none of the milkers' experience to teach them in the most forcible of all ways.
Their behaviour over the variolous test was incredibly stupid and careless.
Their chief apologetic plea of spuriousness was wholly alien to the spirit of
logical investigation, and a flagrant example of the art of circumventing the
unwelcome teachings of experience.
It is hard to believe that the many educated and conscientious men, who belonged
to the medical profession of Britain in those years, had given their reasoned
assent to a doctrine and practice so full of frauds and fallacies that a later
generation will hardly bear to have the naked facts exhibited to the public
gaze.
It is by no means certain that the active spirits in the new project were either
many, or fairly representative of the best professional qualities. The
evidence of Dr.
184 GENERAL ASSENT IN ENGLAND.
Moseley, an opponent, may be thought tainted in regard to the quality of the
early backers of Jenner; but, if we allow for his love of stating a case in a
few hyperbolic strokes, his testimony is not without its value and
significance. Writing in 1808, he said: 1 "The mere operative practice of
vaccination has been chiefly carried on by lady-doctors, wrong-headed clergymen,
needy and dependent medicasters, and disorderly men-midwives. No man of letters,
or of the least pretensions to science, Dr. Pearson excepted, has lately been
concerned in it. It has been, and now is, in the hands of the most ignorant of
medicine." That is Moseley's exaggerated way, which has always caused large
deductions to be made from his credit.
Vaccination, very likely, was most affected by the class of amateurs and fussy
novelty-hunters to whom he refers ; but it was tried and countenanced quite
early in the day by a certain number, perhaps not a large number, who were by no
means among the ignorant of the profession. It is true that some second or
third-rate persons, such as Ring, Huggan, and members of, the Jenner family, do
come up again and again in the vaccination writings of the time, like the
stage-army, which makes a great parade by going off at one wing and on again at
the other ; but there were some distinguished names among its early patrons,
without whose, support the new doctrine and practice would hardly have made way.
It is even more important, for understanding how
1 A Review of the Report of the Royal College of Physicians on Vaccination.
London, 1808, p. 11.
CRITICISM SILENCED BY ABUSE. 185
the general assent was secured, to observe the nature of the opposition. Moseley
was the only considerable person who put his foot down at the outset (September,
1798), while it was still possible to have killed the imposture by criticism.
When Woodville's activity set men talking, several more made a feeble show of
hesitation, or called attention to the evidence against Jenner's theories. Of
such was the eminently respectable Dr. John Sims, who was speedily denounced by
Jenner as a "snarling fellow," and thereby brought to his proper bearings within
the next month or two. The charges of jealousy, malignity, and the like were so
freely flung about on speculation by the personal following of Jenner that it
needed some strength of conviction, as well as an established reputation, to
remain indifferent to them. None but the staunch conservatives of the old
inoculation continued to make a firm stand ; and although many medical men must
have withheld their assent for a long period, and some even for their whole
lives, yet, like the corresponding large class of solid and sensible, if
somewhat apathetic, men in the profession who watch the successive crazes of
our own day, they would make hardly any show in the public controversy, leaving
the novelty to be judged by time.
The practical success of Woodville in procuring an abundance of cowpox matter
for trial, and the confirmation, under the eyes of a number of men in London,
of the correctness of Jenner's plates and of whatever objective description his
text contained, gave a start to the movement which would have else been wanting
perhaps for ever. Even the authoritative voice of the Royal Society, in the
person of Sir Joseph Banks, the
186 GENERAL ASSENT IN ENGLAND.
president, was turned from its former opposition to a more or less cordial
assent, after the demonstration of cowpox at the milk-farm in Gray's Inn Lane.
Sir Joseph was not the man to oppose anything, if it seemed likely to become a
success. Mr. Cline's interest had been enlisted from the first appearance of
Jenner in London. Mr. Abernethy had sent for publication some observations on
cowpoxed milkers collected by his brother-in-law, the Rev. R. Holt, of Finmere,
Oxfordshire, and had so been drawn into the circle of Jenner's supporters. Mr.
Francis Knight, a court surgeon of great influence, who was connected with the
west country, had heard of cowpox before, and was ready to back up the
Gloucestershire project as in private duty bound. Dr. Denman had been
button-holed about it, and gave the weight of his name, without showing any
intelligent grasp of the problem. Dr. Saunders, senior physician to Guy's
Hospital and a leading man at the College of Physicians, had also allowed his
name to be used. At Oxford, Sir Christopher Pegge, reader of anatomy and one of
the leading physicians, happened to hear of cow-pox and horse-grease in company
at a farm near Thame, and came forward with his cases as a warm supporter of the
movement; although the shifty Jenner was at that very time seeking to escape
from the horse-grease doctrine which poor Sir Christopher's cases proved. At
Cambridge, Sir Isaac Pennington, regius professor of physic, had made inquiries
among the dairy farms in the Cottenham district; he had formed an opinion
adverse to the horse-grease part of the hypothesis, and he was understood to be
adverse to the whole project, but not publicly so.
THE LEADERS OF OPINION. 187
A very useful man for Jenner's purpose was Matthew Tierney (afterwards Sir
Matthew), who was surgeon to a Gloucestershire regiment of militia, and was
acquainted with Jenner at home. "Let Tierney know," Jenner wrote to a common
friend, "that my new edition mentioning his name is published." Tierney was
shortly after in Edinburgh, and well repaid Jenner for that mention of his name.
He succeeded in persuading the great Dr. Gregory, who had hitherto read nothing
on the subject,1 to adopt the new practice, almost as a personal favour, or at
all events on the easiest evidential terms. Tierney wrote to Jenner from
Edinburgh : "Its being received by the professors here will certainly be a
means of spreading it more rapidly, and I flatter myself this is now
established." Hardly any assent was more important to secure than that of the
great medical school of Edinburgh.
In the army cowpoxing had made way under the patronage of the Duke of York, who
saw Jenner upon the subject in London on the 1st of March, 1800. The Duke of
Clarence had given him an interview in February. The navy had a very zealous
champion of Jennerism in the person of Dr. Trotter, the well-known author of
Medicina Nautica. Trotter had an imaginative vein in him, and wrote a
five-act tragedy in verse, entitled The Noble Foundling; or, the Hermit of the
1 Tierney to Jenner, 21st March, 1800 : "Dr. Gregory, the professor of physic
here, knew very little about it, and of course did not encourage it. I gave him
the sum of my experience, and he now seems to entertain more favourable opinions
of it. Indeed, he did me the unwished-for honour of reading my accounts to his
class.''—Baron, i. 376.
188 GENERAL ASSENT IN ENGLAND.
Tweed. Of the progress of cowpoxing he says : "Like the early propagation of
Christianity by its Divine Leader, it was first preached to the poor. The
children of poor soldiers and poor fishermen first partook of its blessings ;
publicans and sinners have since embraced it ; and the purity of its doctrine
and practice is making proselytes to the very Land's End in Cornwall."l The
first of a number of medals struck in honour of vaccination was one from the
naval medical service, led by Trotter, which Jenner had presented to him in
February, 1801.
Support of great use as an advertisement, but of no intrinsic authority, came
from the men of science. Wollaston wrote to Jenner, in the year 1800: "You have
proved to the satisfaction of every candid person that there is a disease of the
very mildest kind communicated by inoculation, which perfectly secures the
constitution from the smallpox."2 Blumenbach, the celebrated anatomist of
Gottingen, wrote to Jenner that they had elected him into their Royal Academy of
Sciences on account of "that immortal work by which you have become one of the
greatest benefactors to mankind." 3
Dr. Erasmus Darwin, the famous author of Zoonomia, wrote to Jenner on the 24th
February, 1802 (a few weeks before his death) : "In a little time it may occur
that the christening and vaccination of children may always be performed on the
same day." 4 Dr. Darwin was something of a humorist, and a little tainted with
1 Med. and Phys. Journ., iii. 525 (6th May, 1800).
2 In Baron, i.
3 Ibid.
4 Ibid., i. 541.
THE PROFESSION TESTIFIES. 189
irreligion ; it is just possible that he was poking fun at Jenner.
On the 19th of July, 1800, thirty-six of the leading physicians and surgeons in
London issued an advertisement in the Morning Herald, in the following terms :
"Many unfounded reports having been circulated, which have a tendency to
prejudice the mind of the public against the inoculation of the cowpox, we, the
undersigned physicians and surgeons, think it our duty to declare our
opinion—that those persons who have had the cowpox are perfectly secure from the
infection of the smallpox. We also declare that the inoculated cowpox is a much
milder and safer disease than the inoculated smallpox." In January, 1801, thirty
new signatures were obtained in London for this manifesto by the indefatigable
Ring ; and similar declarations were made by the chief medical men in York,
Leeds, Chester, Durham, Ipswich, Oxford, and other important centres.
Those who thus came forward to lead public opinion mostly took their cue from
Jenner, who, in his Further Observations, published in April, 1799, was bold
enough to say:—
"In every instance the patient who has felt its influence has completely lost
the susceptibility for the variolous contagion ; and as these instances are now
become numerous, I conceive that, joined to the observations in the former part
of this paper, they sufficiently preclude me from the necessity of entering into
controversies with those who have circulated reports adverse to my assertions
on no other evidence than what has been casually collected." The Continuation of
Facts and Observations, published in December, 1799, spoke of the
190 GENERAL ASSENT IN ENGLAND.
evidence as then practically complete.1 In like manner Dr. Huggan, of West Kent,
wrote, on 31st December, 1799: "The discussion of the subject will, of course,
be considered as closed. This is a circumstance truly honourable to Dr. Jenner.
Exegit monnmentum aere perennius."
On the 1st of March, 1800, Dr. Denman re-echoed Jenner's own claims as follows :
"It appears to me that none of the facts or observations mentioned by Dr.
Jenner have been disproved or refuted, and that no new information has been
gained on any material point by all that has been written on the subject since
the publication of his first treatise." A pamphlet by Mr. Creaser, of Bath, in
1800, speaks of "extensive and impartial trials by men of the first talents,
independent of concert or co-operation. The result is that, although the
inoculation of the cowpox is one of the boldest and most direct innovations on
preceding practice, and as such has had to encounter all the impediments which
are usually opposed to novelty by the operations of scepticism, prejudice and
interest; yet its asserted and almost unparalleled advantages have been
realized in their highest extent by a mass of irresistible evidence. . . . It is
extraordinary how exactly Jenner has been confirmed." The confirmation went,
indeed, rather too far; for Creaser himself included in it the horse-grease
origin of genuine cowpox, which Jenner was at that very time
1 "1 have the pleasure of seeing that the feeble efforts of a few individuals
to depreciate the new practice are sinking fast into contempt beneath the
immense mass of evidence which has risen up in support of it." (Jenner,
l.c.)
A SPEEDY DECISION. 191
retiring from. In July, 1800, John Ring, the most active of the cowpox
propagandists, writes : " Whatever be the origin of vaccine virus, it must give
every friend to the interests of humanity peculiar pleasure to contemplate its
end. ... It may now be considered as completely established." In September he
wrote again to say that smallpox inoculation had been discontinued since three
months at the Inoculation Hospital. On the 5th December, 1800, Dr. Woodforde, of
Castle Cary, Somerset, writes that the Jennerian practice is now fully
established, "every generous mind will congratulate himself."
In June, 1800, the editor of the Medical Journal announced that "vaccination is
nearly established in this island." Simmons, of Manchester, wrote on the 9th
December, 1800: "Perhaps no subject ever met with so ample an examination in so
short a time. . . . If the testimony of medical men in its favour, more general
than ever was published before on any one subject, can be supposed to determine
the former [that cowpox wards off smallpox], it must be admitted as proved
beyond all controversy."
Clement of Shrewsbury, wrote on the 16th June, 1801: "I have the pleasure to add
that the Jennerian inoculation is universally adopted by the medical gentlemen
of this town and neighbourhood." Peck, of Higham Ferrers, on 8th June : " It has
been left for the present period to glory in very important discoveries. Witness
the indisputable extermination of that dire scourge of the nation, the smallpox.
A Jenner has been ordered to arrest its insatiate rage."
Paterson, of Montrose, on 23rd May, 1801, confesses
192 GENERAL ASSENT IN ENGLAND.
that he is "lost at once in admiration and gratitude. No farther testimony is
needed."
In sending to the Medical Journal a piece of testimony from France, James Moore
explains, on 5th February, 1802, that he does not send it as additional proof;
for "all opposition to this great discovery seems now to be silenced. Like the
doctrine of the Circulation of the Blood by the immortal Harvey, it is already
established." Huggan, as we have seen, did not wait so long; more than two
years before (31st December, 1799), on the last day of the year in which the
practice really began to be tried, he wrote that "the discussion of the subject
will, of course, be considered as closed." l
On the 12th September, 1800, Leese, a London practitioner, writes to the
Medical Journal that "the general opinion of the most discerning of the
profession, as well as of the public, now preponderates in favour of the new
disease." On the 17th September, Huggan again writes on alleged failures : "People are weak who believe such an occurrence
probable, or even possible. Such
cases may impose upon the credulous, may perplex the minds of those who still
have their doubts, and may afford a malicious and short-lived triumph to the
ungenerous part of the profession, but can never influence the liberal and
enlightened."
It was in vain for such an outsider as "Candidus," in the Gentleman's Magazine,
to write (11th July, 1799): " There is much to be done on this subject, Mr. Urban
. . . The public mind is by no means satisfied ; and indeed it is impossible it should be; for the story
1 Med. and Phys. Journ., vii. 201.
APPROVAL BY THE PUBLIC.
193
hitherto has had more of the appearance of a bottle-conjuror's history than of a
sober philosophical disquisition, and could not fail to excite ridicule."
"Candidus" was a medical man who had retired to the country after a busy
practice, and was able to apply that independent scrutiny which members of his
profession are then in a far better position to exercise than when they are in
the whirl of daily business.
Meanwhile among the public there was the usual willingness to accept
professional authority. A doctor in the Midlands wrote l that the ordinary class
of paying patients "take the opinion of the practitioners they employ, and
sometimes commission them to inoculate their children 'with either kind of
pock.' The upper classes judge for themselves, and those among them who are
philanthropists and converts to the new faith inoculate their own children and
those of the poor together." The nobility and gentry of Gloucestershire came
forward in 1801, and presented their countryman, Edward Jenner, M.D., F.R.S.,
with a piece of plate.
On the 17th of March, 1802, Jenner laid before Parliament a petition, asking to
be rewarded for his discovery. The prime minister, Addington, took the King's
pleasure on it, who strongly recommended it to the consideration of the House
of Commons ; and a Committee was appointed to consider it, with Admiral
Berkeley, one of the members for Gloucestershire, as chairman. This was the
first opportunity for a public and impartial scrutiny of Jenner's claims.
The Committee was pledged in its very constitution,
1 Stokes, of Chesterfield, in Med. and
Phys. Journ., v. 17.
194 GENERAL ASSENT IN ENGLAND.
and made no such scrutiny as a very simple line of cross-examination would have
led to. The Committee were hardly qualified to judge on the merits of the
pathological and epidemiological question, and had practically no doubt on the
empirical evidence of protection. They called three adverse witnesses, and gave
a further show of fairness to their proceedings by hearing a good deal of
evidence against the priority of Jenner's claim. It was shown that Farmer Jesty
had cowpoxed his wife and children a good many years before Jenner, and there
was some evidence that a formal project for cowpoxing on a large scale had been
communicated, shortly after that event, in a letter to Sir George Baker,
president of the College of Physicians. So far from damaging Jenner's claim, all
the evidence of that sort did it good ; it served to show that these ideas had
been in the air, and that therefore there was some general truth in them. It was
an obvious conclusion for the Committee to come to, that Jenner was entitled to
the priority inasmuch as he had been the first to come before the profession
with his Inquiry. The only serious stand was made by Pearson ; and that was, of
course, not against the truth and value of cowpoxing, but against Jenner's claim
to have made it current coin. Woodville, whose practical merits were really
greater than those of Pearson, gave Jenner the whole credit, and did not say a
word in support of his London colleague. Pearson's attempt to minimize Jenner's
merits did not make a favourable impression for himself; while it served, like
the evidence of pre-Jennerian cowpoxing, to raise a side issue, and to divert
any suspicious feeling that the whole thing was a mistake.
THE PARLIAMENTARY COMMITTEE. 195
The Committee, naturally, did not formally overlook the great question whether
cowpoxing was a preventive of smallpox. They called evidence as to whether
cowpoxed persons were incapable of receiving the infection of smallpox, whether
cowpox inoculation was preferable on various grounds to variolous inoculation,
and ( whether cowpox could be inoculated without injuring the health. The
opposition was represented by Mr. Birch, Dr. Moseley, and Dr. Rowley, all of
them men of good position. They were rather easily disposed of by the familiar
English device of asking them what was their personal experience of the practice
in question. They had, of course, to make the damning admission that their
experience of it, as practised by themselves, was nil; so that, on the whole,
Birch, Moseley, and Rowley were of little account before the Committee. They had
a fairer field afterwards as pamphleteers before the public, who were just as
willing to hear the dialectical bearings of the question as the House of Commons
Committee was unwilling to listen to anything but the voice of " experts " and
authorities.
The authoritative opinions which the Committee heard were monotonous in their
approval of the new practice.
DR. Ash, a leading fellow of the College of Physicians, had had three of his
own children inoculated with it. It is an effectual and permanent security
against the smallpox, as sufficiently proved by the immense body of experiments
(which the doctor could hardly have read with care, or he would not have spoken
so).
196 GENERAL
ASSENT IN ENGLAND.
Sir Everard Home, F.R.S. (who had advised the Royal Society to reject Jenner's
Inquiry), said that his own opinion was best stated by his having had one of his
own children inoculated with vaccine matter, and he is perfectly satisfied with
its security.
Dr. Woodville gives the preference to the vaccine over the smallpox inoculation
because he finds it equally certain in securing the patient from the smallpox,
and because it is without danger or risk of life, and not, like the smallpox,
contagious.
Sir Gilbert Blane was at first prejudiced against cowpoxing, owing to the
numerous cases of smallpox eruption conjoined with it at Woodville's hospital.
Afterwards he vaccinated one of his children, who went through it perfectly well
and has since resisted the variolous infection, which was performed seventeen
months after the other. If the vaccine was universally substituted, he thinks
the smallpox must in a short time be extinct. The objections to it were grounded
on fallacy or misrepresentation.
Mr. Francis Knight, Inspector-General of Army Hospitals, had seen some cases of
the spurious kind.
Mr. John Griffiths, surgeon to the Queen's Household and to St. George's
Hospital, had inoculated upwards of fifteen hundred persons with cowpox, not one
of whom had any untoward symptoms. He does not speak of the variolous test.
Dr. Denman believed vaccine to be a perfect preventive of smallpox, if properly
conducted.
Dr. Croft had his own children vaccinated, and had uniformly recommended the new
protective to his patients. A greater blessing to mankind than any
EVIDENCE OF THE MEDICAL LEADERS. 197
other discovery ever made in medicine. Would cause the smallpox to be remembered
only by name.
Dr. Nelson, of the Vaccine Pock Institution, believed that about 700 persons
had been inoculated at that Institution, who had all done well, and none had
since then taken smallpox either from inoculation or otherwise. The health of
sickly children in general much mended by vaccine.
SIR George Baker, F.R.S., physician to their Majesties, knew of no instance of
cowpox inoculation creating or exciting any constitutional disorder, or of its
being fatal.
DR. THORNTON, of the Marylebone Dispensary (author of VindicicœVaccinœ), had
inoculated with cowpox two children of Lord Somerville's coachman ; heard
afterwards that they had both taken the smallpox ; their cowpox must have been
spurious. Dr. Jenner had elucidated the very obscure subject of spurious
cowpox.
Mr. Keate, Surgeon-General to the Army, surgeon to the Queen and to the Prince
of Wales, gave the new-practice his general approval.
Dr. Lister, physician to St. Thomas's Hospital (who had assured Cline as early
as July, 1798, that he was sure cowpox was a protective), was now called to
explain away a case of failure to protect, which he did very fluently.
Mr. Cline had been convinced from the first, and had recommended cowpox strongly
to all his friends, including Sir Walter Farquhar. Cases of failure must have
been done with spurious matter.
Dr. BRADLEY, physician to the Westminster Hospital (and editor of the Medical
and Physical Journal,
198 GENERAL ASSENT IN ENGLAND.
in which he had pledged himself to the utmost to back up Jenner), believed that
cowpox will prevent smallpox to the extent of human life. Thinks that if Dr.
Jenner had settled in London and kept cowpox a secret, he might have made ten
thousand a year for the first five years, and double that sum afterwards.
Sir Walter Farquhar, M.D., had seen cowpox in one of his grandchildren, who had
it very mildly and was protected by it. Thinks it a permanent security. Believes
that an income of ten thousand a year was lost to Dr. Jenner by making the
secret public.
Dr. James Sims, president of the Medical Society, thinks Dr. Jenner might have
become the richest man in these kingdoms by trading on his cowpox secret. The
Medical Society of London sent through him a unanimous testimony in favour of
cowpoxing.
Dr. Saunders, physician to Guy's Hospital, thinks cowpox bids fair to extirpate
the poison of smallpox. If Dr. Jenner "had rendered the subject more studiously
mysterious, and by that means secured to himself in some degree a monopoly of
the practice, instead of acting in the liberal and candid manner he had done, it
would have been a source of much greater emolument to him."
Dr. Lettsom, F.R.S., believed that cowpox secured the person from smallpox as
much as the inoculation of smallpox does. Two relations of his, variolated in
the Suttonian way, had afterwards taken smallpox, and one of them had died. Had
attended two other patients in severe smallpox, both of whom had been inoculated
with smallpox a year or two before.
DR. FRAMPTON, physician to the London Hospital,
JENNER BEFORE THE COMMITTEE. 199
had never found cowpox fail in preventing the attack of smallpox ; had tried it
on three of his own children, who had stood the variolous test three several
times.
Dr. Matthew Baillie, late physician to St. George's Hospital, had gone to see a
few cases of inoculated cow-pox, in order to become thoroughly acquainted with
the appearance and progress of the cowpox pustule. A patient who has properly
undergone the cowpox is perfectly secure from the smallpox. Spurious cowpox was
so difficult a question, that Dr. Jenner's knowledge of the genuine sort would
have enabled him to make a considerable fortune if he had traded on it. The
most important discovery ever made in medicine; would ultimately banish the
smallpox from the class of diseases.
The Committee took their pathology almost exclusively from the Rev. G. C. Jenner,
the curate who had tried until fifty times to vaccinate himself, and had
produced spurious cowpox only then. They took the history of the rise and
progress of the cowpoxing idea from the lips of the great discoverer himself,
who omitted the horse-grease part of the comedy. The Committee heard no
reference to horse-grease from first to last, nor do they seem to have had the
smallest curiosity to know what sort of pox the cowpox really was. They were
reassured over and over again that it was not catching, like smallpox, that it
was mild when inoculated on the arm, that no one ever died of it, and that, if
it were not spurious, it was a certain preventive of smallpox. If they had read
the cases published even by the friends of the practice, such as Ward's cases at
Manchester, they would have found that the variolous test had failed in the most
obvious way in a good many; and if they had inquired into the larger number of
cases
200 GENERAL ASSENT IN ENGLAND.
where the variolous test had apparently proved the prophylactic virtues of
cowpox, they would have found that the patients had usually developed about as
much of smallpox as the inoculative methods of the time were calculated to
produce.
It was unfortunate that the only persons who had a motive for scrutinizing the
Jennerian evidence, namely the friends of the old variolous inoculation, had
also a motive for not inquiring too closely into the shadowy or formal type of
the variolous test. They would probably not have been listened to ; but, as it
was, the opportunity was missed of showing how the profession had been deceived,
or had deceived themselves, on the grand question of the antagonist character of
cowpox. If the variolous test had been shown at that date to be the meaningless
thing that it was afterwards admitted to be, even Admiral Berkeley and his
fellow committee-men could hardly have reported as they did. It was part of the
peculiar irony of the situation that the only opponents of the Jennerian
doctrines were precluded, by their own interest in variolation, from attacking
these doctrines on the ground of the variolous test. The apparent success of
that test was what chiefly gained assent; it was really the most vulnerable
point in the Jennerian theory as stated for public apprehension ; but, to have
shown that the trifling effects usually produced by variolation in a cowpoxed
subject were neither more nor less than the usual results of Suttonian
variolation when there was no question of cowpox at all, would not have served
the purpose of the Suttonians, for it would have placed the formal and illusory
character of their own prophylaxis in too glaring a light. Moseley himself
was impressed
DECISION OF PARLIAMENT.
201
by the evidence of the variolous test ; he admitted that cowpox might hinder the
development of variola for a time, perhaps for two or three years. Birch and
Rowley, in their evidence, did not adduce any of the numerous cases where
experimental variolation following cowpox had produced an average degree of
smallpox, but only a few cases where the cowpoxed had taken the smallpox in the
natural way by contagion. Thus the body of experimental evidence was allowed for
the time to pass unchallenged ; and there can be no question that it was upon
the experimental evidence that the verdict really turned.
The Committee reported to the House that the claim of Dr. Jenner's petition had
been established : "As soon as the New Inoculation becomes universal, it must
absolutely extinguish one of the most destructive disorders by which the human
race has been visited." On the 2nd of June, 1802, Admiral Berkeley proposed in
the House a grant to Jenner of £10,000, to which Sir Henry Mildmay moved an
amendment (lost by 56 to 59) to make the sum £20,000. The prime minister,
Addington, a notorious worshipper of authority, and more ignorant, naturally, of
pathology and epidemiology than of most things, gave it as his opinion that
cowpoxing was among the greatest, if not the very greatest of discoveries since
the creation of man. Mr. Windham, Mr. Wilberforce, and Mr. Grey were all
convinced, and spoke handsomely of Jenner. The substantive motion was put to the
vote and carried unanimously : "That it is the opinion of the Committee that a
sum not exceeding £10,000 be granted to his Majesty to be paid as a remuneration
to Dr. Edward Jenner for promulgating the discovery of the
202 GENERAL ASSENT IN ENGLAND.
Vaccine Inoculation, by which mode that dreadful malady the small pox
was prevented." l
The Annual Register2 remarks that the public were highly gratified by this
munificence. Admiral Berkeley's Committee, it seems, had left no means untried
to procure cases hostile to the efficacy of this noble invention, but in every
instance the result was highly satisfactory. At the same time the gallant
Admiral is commended as having been from the first "the friend and patron of
Dr. Jenner," and as having "brought his discovery forward to notice through
the medium of his high rank and great connections, and pressed it upon the
attention of the nation by procuring the unanimous approbation of parliament to
the discoverer." Just so ; it is a useful thing to have an aristocratic friend
who is strong enough to procure the unanimous approbation of parliament. Only, a
less naive chronicler would not have put the matter quite so plainly. Mr. Bankes,
member for Corfe Castle, who had sat on the Committee, said in the debate that,
although he considered the discovery a useful one, yet he looked upon the report
of the Committee with some degree of jealousy. The members of it appeared to him in the light of nominees on a committee to try the merits of a contested
election, as being the friends of the petitioner."3 Bankes, having been a member
of it himself, was in a good position for forming an opinion. It is on record
that Jenner fell into so despondent a mood while the evidence was being
taken that he
1 European Mag., xlii. 137.
2 For 1802, p. 182.
3 Morning Herald, 3rd June, 1802.
THE BERKELEY INTEREST. 203
actually talked of abandoning his claim, and was prevented from doing so by the
assurance of Admiral Berkeley that it would all come right.
This judgment of the House of Commons, based upon that of the medical leaders,
gave a great support to the doctrine and practice of cowpoxing both at home and
abroad, a support which proved invaluable when the epidemic of smallpox returned
in 1804-5, and exhibited the protective in its true light to the eyes of those
who were most immediately concerned with the practical results. Meanwhile we
have to see how the Jennerian novelty was received abroad. Foreign opinion was
bound to react upon opinion at home and was afterwards publicly appealed to,
Wilberforce in particular being impressed by the consensus of all Europe.
Germany, Austria, France, and Italy had famous medical schools, as well as academical societies of great authority and renown. The reception which foreign
countries gave to the English project for exterminating smallpox deserves as
careful an examination as the reception which it met with in the country of its
birth.
CHAPTER 9.
THE GERMAN ENDORSEMENT.
THE adoption of cowpoxing by foreign countries has always been considered one of
the best arguments for the truth of the doctrine and the value of the practice.
To this medical innovation the famous aphorism of St. Augustine has been
confidently applied : Securus judicat orbis terrarum. The defender of
vaccination in the blue-book of 1857 waxes eloquent over "the common
convictions of mankind."1 An English statesman and critical historian, who had a
trained eye for fallacies and illusions, Sir George Cornewall Lewis, has
adduced vaccination as a striking instance of the beneficent influence of
scientific authority upon popular opinion. After a few years, he said, the
Jennerian teaching "had been brought to a certain test, and had made its way in
all countries."2 That it made its way in all countries, and very quickly too, is
unquestioned. The point of Sir George Lewis's argument is, that vaccination was
brought to a certain test, that it rested on scientific evidence, that it was
promulgated by
1 Papers on the History and Practice of Vaccination. Presented
to both Houses of Parliament, 1857.
2 Influence of Authority in Matters of Opinion, 2nd ed., p. 36.
SCIENTIFIC AUTHORITY. 205
the respectable authority of the medical leaders after they had duly satisfied
themselves, and that it was rightly accepted by the people as having been found
to be all that it claimed to be. The same philosophical historian, who finds in
the early Roman history an unlimited field for scepticism, and an occasion for
insisting on a standard of evidence which most persons will think impracticable,
finds in the latter-day cowpox legend a happy illustration of the
trustworthiness of scientific or medical authority. The argument from common
consent has seldom been used with greater effect than in the case of the
Jennerian mystification ; the sceptical in everything else are not sceptical
here, because vaccination has been established in the very age of science,
under the cognisance and approval of the scientific body, and by the almost
unanimous voice of the medical profession in all countries. Writers of the Cornewall Lewis school show a confidence in scientific and medical authority
which no one can share who has made it his business to study the history of
scientific and medical developments. Scientific or medical authority arises
under the same mundane influences as all other authority. This is not the place
to set forth the full psychological grounds for rating scientific authority in
doctrinal matters at no higher value than any other kind of authority. We are
here concerned with the scrutiny of a small fragment of established medical
doctrine. When the result has been made clear, those who will may point the
moral for themselves.
Jenner's first formal scientific recognition abroad was his election, in the
autumn of 1801, into the Royal Academy of Sciences of Gottingen. Blumenbach,
the
206 THE GERMAN ENDORSEMENT.
illustrious anatomist, announced the fact to Jenner on the 12th September, and
took occasion on his own part to compliment him on "that immortal work by which
you have become one of the greatest benefactors of mankind." Merely on the face
of it this recognition was of great value. Gottingen had maintained a high
standard for science and scholarship ever since the Georgia Augusta University
had been called into existence in that third-rate country town, in 1734, by the
magic wand of George II. The greatest care had been taken of its academical
repute ; the choice of professors continued for many years to be a matter of the
most anxious thought to the Elector's ministers. The consequence was that an
immense concourse of students of all the faculties flocked to the homely little
place. The professors were alive to every movement in the learned and scientific
world ; the academical voice of Gottingen was authoritative in no ordinary
degree.
There were also special reasons why the deliverance of the Academy of Sciences
upon the new Jennerian project should carry great weight. Hanover had taken the
lead in Germany in trying the new method of inoculation, just as it had been the
centre from which the original smallpox inoculation had spread over Germany a
generation or two before. Ballhorn, a rising young physician of the capital,
translated the Inquiry into German in 1799, and the Further
Observations, along with Woodville's Reports, the year after. In February, 1801, he published a
treatise in French, in conjunction with Stromeyer, a court surgeon, on the
results of their own experience of cowpoxing up to that date.1 In Gottingen
1 Traite de l'Inoculation. Leipsic, 1801.
THE GOTTINGEN ACADEMY. 207
itself the practice had been tried in 1800 by Osiander, professor of midwifery,
and by Arnemann and Wardenburg, the directors of the surgical clinics. In the
summer of 1801, Osiander published a disquisition on Cowpox,1 including an
account of the Gottingen practice and a minute record of his own cases. "Perhaps
never before," he says, with reference to that locality, "has a method of the
kind been so widely diffused in so astonishingly short a time, or adopted with
so great zeal and unselfishness by medical practitioners, who saw before them a
certain prospect of diminished incomes in taking these measures to ward off the
smallpox."
Here, then, was the experience at their own door for enabling the Gottingen
Academy of Sciences to form a correct judgment upon the doctrines and
pretensions of Jenner. We shall see how Jenner gained their suffrages. He had
sent to Blumenbach, professor of Anatomy, and the greatest personage in the
medical faculty, a copy of his collected cowpox essays by the hands of an
English student, accompanied, it would seem, by a copy of or a reference to his
Cuckoo paper in the Philosophical Transactions, and a reference to another paper
which he had on hand for the Royal Society on the Migration of Birds. These
credentials, together with common report, appear to have satisfied Blumenbach,
who proposed him for election at a meeting of the Academy. Osiander, Arnemann,
and Wardenburg were the members to whom their colleagues would look more
especially for guidance in a matter which
1 Ausfuhrliche Abhandluug iiber die Kuhpockcn. Gottingen, 1801.
208 THE GERMAN ENDORSEMENT.
most of them knew nothing of, and their testimony may be judged of by the fact
that Jenner was elected by acclamation. Let us now see what native experience
this authoritative endorsement had behind it. The revelations here are more
curious than anything that we have seen concerning the reception of Jennerism in
the country of its birth.
The most obvious thing in Osiander's book is his child-like readiness to accept
every statement, conclusion, and promise of Jenner without scrutiny. He believes
in the immunity of the cowpoxed from smallpox as absolutely as if vaccination
had been practised for a century and had proved an unqualified success. He
adopts the apologetic argument about "spurious cowpox" without the smallest
hesitation, reproducing the horse-grease doctrine in a mechanical way, as if he
hardly saw its bearing. He has no suspicion of the unwarranted liberty that
Jenner had furtively taken in his title Variolœ Vaccinœ; for he gives
Kuhblattern and Blattern der Kuhe (smallpox of the cow) among the synonyms of
Kuhpocken. He is especially indignant with Dr. Johann Valentin Muller, of
Frankfurt-on-Main, who had issued a pamphlet to the laity, calling upon them to
reject cowpoxing as an untrustworthy protective, inasmuch as cowpox had no
connexion whatsoever with smallpox. It would never do, says Osiander, to reason
in that theoretical way, and to reject the plain teaching of facts and
experiments. Had it not been shown by hundreds of experiments, both in England
and elsewhere, that the cowpoxed could not take smallpox? After this bold appeal
to experiment, we turn, naturally, with some interest to the minute account of
nine cases of his own,
VARIOLOUS TEST AT HANOVER.
200
in September and October, 1800, and in February, 1801; but in not one of these
do we read of the variolous test having been applied. Perhaps he trusted to
Ballhom and Stromeyer to have applied it. Let us see, then, how much scrutiny
these medical men applied to this new kind of protective pox which had come to
them from over the sea.
In April, 1800, Stromeyer wrote to a London correspondent 1 that Ballhorn and
himself had applied the variolous test in only one of their vaccinated patients
that year, and that the variolation in that case had produced the local
pustule. One naturally supposes that they had fully satisfied themselves in
their practice of the year before, and that they saw no use in trying the
variolous test any longer. As a matter of fact, Ballhorn and Stromeyer, the
pioneers of cowpoxing in Germany, tried the variolous test just five times;
thrice in 1799, and twice in 1800. "We repeat here," they say in the French
treatise of 1801, "our most solemn assurance that none of these variolous
inoculations had the smallest effect." But let us look at the facts with our own eyes.
Of the three earlier cases we have only scanty particulars :2 one was vaccinated
on 17th June, 1799, and tested with smallpox on 14th August ; another was also
vaccinated in June, and tested on the 22nd of September ; the third was
vaccinated on the 28th of May, 1799, and tested in January, 1800. The smallpox
in all three was "ganzlich unwirksam" (quite without effect). But, of the
preceding vaccinations of these same children, we also read that "there were
almost always obdurate and callous ulcers left behind on the arms " ; so that in
at least the two cases tested within a few
1 Med. and Phys. Journ., iii.
2 Hufeland's Journal, x. pt. 3, p. 106.
210 THE GERMAN ENDORSEMENT.
weeks of being cowpoxed, there was a simple explanation of the smallpox
aborting.
Of the two cases tested among the vaccinations of 1800, one was cowpoxed on the
3rd of February, suffered in due course from a general vaccinal eruption, was
tested by the inoculation of smallpox on the 19th of March, and developed a
correct variolous pustule, which went through the full stages, and was still
covered by a crust on the twelfth day ; its vaccinal eruption would itself have
sufficed to check whatever general eruption the mode of inoculation of smallpox
matter (by lancet-puncture) was likely to have produced on a fair field.
The
other child, tested in 1800, had been vaccinated the year before (20th June,
1799); a sister, whose vaccination in June, 1799, had failed, while her
brother's had succeeded, was also tested with smallpox as a controlling
experiment. The two children had the smallpox matter inserted on the 24th April,
at an incision on the right arm of each, and again on the 25th by means of
threads soaked in the matter and introduced into a small blister which had been
raised on the left arm of each for the purpose. In neither child did the
incision-spot produce a pustule ; in both the blister-inoculation ran almost the
same active course, and had become a crust on the ninth day. The chief
difference was that the sister, whose vaccination had failed, developed close
to the blister a single smallpox pimple or pustule on the tenth day, which died
away in less than forty-eight hours.
There does not seem to be much to choose between the result of the test in the
vaccinated brother and the unvaccinated sister ; but the authors solemnly
concluded that the variolous test came to nothing in the brother, thanks to his
cowpox, whereas the sister's inoculation had really given her the smallpox,
although "extremement benigne et legere." Down to the end of the year 1800,
Drs. Ballhorn and Stromeyer had vaccinated five hundred children with their own
hands, and in just five of these had they experimentally asked the great
question by means of the variolous test—with what result or under what
circumstances we have now seen.
THE REAL TEST. 211
However, the great question was getting itself asked in those months without any
experiment, and was getting itself answered without any ambiguity. Smallpox was
prevalent with varying intensity among the children in various towns and
villages of Hanover and Brunswick, and in Bremen, Hamburg, and other parts of
North Germany. The disease rose to epidemic intensity at one place after
another, and the alarm that it caused made the people more inclined to submit
their children to the new inoculation. Ballhorn l assures us that many allowed it
to be tried at first merely as a harmless thing (which, however, it was not, as
his own experience of slow ulcers showed), and with no great belief in it; but
that the subsequent outbreak of epidemic smallpox made them take to it more
seriously. Lentin, another Hanover physician, wrote to Hufeland 2 on the 27th
July, 1800, that they were awaiting the rise of smallpox to the height of an
epidemic, so that the efficacy of cowpox inoculation might be tested. At that
date, he says, they knew of no authentic case where a vaccinated child had
caught smallpox, no matter how much it had been "exposed"; but he gives
immediately after a case in Hanover, vouched for by Drs. Muhry and Lodemann, in
which a child had been vaccinated to protect it from the smallpox then in the
house, and had taken the latter disease a fortnight after its vaccination.
Ballhorn adduces the following as examples of cow-poxed children successfully
tested by exposing them to smallpox : In the winter of 1799-1800 there was
1 Hufeland's Journal, x. pt. 3, p. 106.
2 Ibid., x. pt. 2, p. 185.
212 THE GERMAN ENDORSEMENT.
a great mortality from smallpox among infants and children at Langenhagen; he
proceeded thither and vaccinated three children, none of whom caught the
epidemic disease, although they were in the midst of it. Now, who were these
children ? One was the child of Herr von Stapper, another of Pastor Holicker,
the third of Lieutenant Dreschler—just the class of persons who might be
expected to have good houses and to keep their children out of harm's way. By
the month of February, 1801, when Ballhorn published his book on cowpox, he had
to admit a certain number of cases in Hanover, in which the epidemic contagion
had taken hold in spite of their recent cowpoxing ; but these cases, he says,
had been vaccinated either imperfectly or with "spurious" matter. No details
being given, it is impossible to follow him here.
Let us take, rather, a remarkable series of events at the small Brunswick town
of Oebisfelde in the summer and autumn of 1801, or at the very time when the
Gottingen Academy of Sciences was honouring Jenner for his immortal discovery.
Professor Wafdenburg, of Gottingen, was one of those who reported the
occurrences;1 Professor Lichtenstein,2 of Helmstadt, was another; and Dr.
Muhlenheim3 was a third. They all agree about the facts, and no one else ever
questioned them. In June, 1801, matter was taken from a child's vaccine vesicle
and inoculated on several more, and so on through four successive generations,
until forty-nine children had been successfully vaccinated. From the
1 Hufeland's Journal, xiv. pt. I (1802), p. 87. 3 Ibid., p. 117.
2 Ibid., p. 107.
THE OEBISFELDE DISASTER.
description given, the vesicles must have been large and tumid, the areola of
full extent, and the constitutional disturbance considerable; the crusts fell
off usually about the end of the third week ; the lymph was of the "clearest and
freshest" kind, and was taken from arm to arm. Of these forty-nine vaccinated
infants, no fewer than forty-five took smallpox in the ordinary way during the
months of August, September, and October, five of them having taken it while the
cowpox was on them and the other forty at a longer interval.
Whoever is curious to see how far a German medical professor could go in the way
of sophistical excuses when he once began, should read the paper by Wardenburg
in Hufeland's Journal. It appears that the first child in the series, who
furnished the vaccine for the other forty-eight, had no Blatternanlage, or
disposition for smallpox ; he had been inoculated with variolous matter before,
and had not taken ; he had been exposed to contagion, and had not taken ; he
was, in short, an incorrigible child so far as smallpox was concerned. Was it
surprising that cowpox matter from such a child's vesicle (however correct the
vesicle might look) should fail in antagonizing smallpox? The matter was false
in its source, and, for all its fine appearance, it was false in its
transmissions through each of the four sets of children. "From such a source
matter would have been falsified even if it had involved a million infants," and
not these unfortunate forty-five only. This was the Gottingen development of the
great doctrine of Spurious Lymph. Wardenburg thus solemnly adjures a colleague,
supposed to be confronted with a case of smallpox after cowpox: "Hast du nicht in diesem Falle vielleicht
214 THE GERMAN ENDORSEMENT.
falsche Schutzblattern erzeugt?" (Hast thou not perhaps raised spurious
protective pox in this case?). Because, if he had, it was no wonder the
protection had failed. A singular anticipation of Wardenburg's development of
the plea of spuriousness, out of the rather unpromising fact that the vaccine
lymph had come through a child who could not be made to take smallpox, is
furnished by De Carro,1 the pioneer of cow-poxing in Vienna. He vaccinated a
count who had long ago gone through the smallpox ; a good cowpox vesicle arose,
from which source twenty-one others were successfully vaccinated, at Geneva, by
Dr. Pelchier, who had been in Vienna and had admired the perfect vesicles of De
Carro's case. But, under these peculiar circumstances, the cowpox failed to
protect them from the inoculated smallpox some months after ; they all took
smallpox, though mildly; and then it was remembered that their common
vaccinifer, then aged forty, had suffered from smallpox when he was a child of
five. His Blatternanlage had, in fact, been exhausted; whereas, in Wardenburg's
case at Oebisfelde, the Blatternanlage had been wanting from the first.
Returning to the practical lessons of the Oebisfelde collapse, Wardenburg asks,
Shall we, therefore, now abandon cowpox inoculation ? and answers with emphasis,
Certainly not! By the time he wrote of these events, but not before the
catastrophe itself, he and his Gottingen colleagues had pledged their academical
credit to Jenner. They had gone rather too far to turn back, but they could at
least put on the whole armour of apologetics.
1 Hufeland's Journal, x. pt. 4 (1800), p. 129.
EXPERIENCES AT BREMEN. 215
I shall give one other North German instance of the gross and palpable failure
of cowpoxing in the very first year or years of its trial. In 1801-2 the
epidemic smallpox was in Bremen, where Dr. G. H. Jawandt vaccinated sixty-two
children.1 He was forced to conclude that cowpox did not ward off the contagion
of smallpox, unless there had been sufficient erysipelatous redness and induration round the vesicle, unless the whole system had been affected, and
unless the fever had been present of a remittent type. These, of course, are
rather hard conditions, not often satisfied. He gives cases of his own, where
smallpox had followed what we should esteem a good, fair, average vaccination.
In one of these, a child aged five, the vesicle ran the regular course, there
was fever on the ninth day, and areolar redness on the ninth and tenth ; three
weeks after, on visiting the tenement to vaccinate others, he found this little
girl running about with a full crop of smallpox pustules on her. This "deceptive
case," he says, is accounted for by the fact that the erysipelatous areola was
not of the right sort; there was not enough induration of the tissues beneath.
Unless we attend to these little things, a good cause will be injured. The paper
has a postscript to say that, since writing the above, several children have
caught smallpox who are said to have had complete (?) cowpox ; but all these
children had been vaccinated by surgeons. This should be a lesson to us not to
allow vaccination to be practised as a mere handicraft. Dr. Jawandt himself
belonged to a higher grade of the profession, and was jealous for the
1 Hufeland's Journal, xiv. pt. I, p. 66.
216 THE GERMAN ENDORSEMENT.
honour of his caste ; but, unhappily, the smallpox had paid no more respect to
vaccination when it was imparted by his own skilful hand than when it was done
by a common Chirurgus.1
The experimental variolous test at Bremen was no more satisfactory than the
epidemic test. The chief vaccinator there, Dr. Albers, had cowpoxed four hundred
children, and tested "several" of them, five or six months after, with smallpox
: "The only effect was a rather severe inflammation of the inoculated spot,
which, however, gradually began to decline on the days when the eruption should
have appeared"2—a rather general statement, but one that might easily cover an
average amount of variolation as induced by the mild methods then in vogue (see
chapter 6.).
Before leaving this part of Germany, we may glance at the reception of cowpox in
Denmark. The Commission (Winslow, Callisen, and others) made no variolous tests
; but they issued a very strong report, in which we read : "From the
experiments of other nations, particularly the English, there are reasons to
hope that the contagion of the natural smallpox throughout futurity can be
entirely annihilated by the vaccine."3
1 An English lady, Miss Bayley, of Hope, near Manchester, put
all these learned Germans to the blush. She had vaccinated 2,600
with her own hand, up to November, 1805, and offered a crown
each to as many of them as could afterwards show that they had
taken smallpox. Only one little boy came to claim the premium ;
but opposite to his name in her books Miss Bayley found a remark
indicating, she afterwards thought, a suspicion that there was
something wrong.
2 Medicinisch-Chirurgische Zeitung (Salzburg),
1801, iii. p. 448.
3 Report of 19th December, 1801, in Baron, i. 475.
FIRST TRIAL AT BERLIN. 217
While these experiences were being gained in Hanover, the new practice was
being tried in Prussia. At Berlin the Jennerian project had from the first the
advantage, or disadvantage, of a certain amount of Court patronage. In December,
1799, Jenner had been requested to send matter for the vaccination of the
Princess Louisa,1 and through that Court channel Privy Councillor Dr. Heim had
come to know Jenner's writings and to make trial of cowpox.2 He vaccinated
several children, and found the course of the disease to be very much as Jenner
had described and figured it. He tested one of his cases, a girl of eight, with
inoculated smallpox four weeks after vaccination, and found her protected ; he
tested also an unvaccinated brother of the former, and found him not protected ;
the sister slept in the same bed with the child suffering from inoculated
smallpox, but did not catch the complaint : "so that I must conclude that
having had the cowpox is a protection against the infection of smallpox." He had
heard when a boy from his father, who kept some cows, that the milkmaids were
subject to a pox from milking, but he had been told " nichts weiteres," i.e.
there was no tale about their protection from smallpox.
Hufeland, professor of medicine at Berlin (having been called from Jena in
1799), was really enthusiastic for Jennerism,3 although he made believe to
hesitate a
1 Baron, i. 2
Hufeland's Journal, x. pt. 2, p. 187.
3 In his first notice of it (l. c. x. pt. 2, p. 189) he argues that, if
vaccination were universally enforced all over the world for a single year,
smallpox must of necessity become extinct. It was a mathe-
218 THE GERMAN ENDORSEMENT.
little at first. As an editor, he was so far open on the question that he
admitted into his Journal a hostile paper of 109 pages by Professor Marcus Herz,
"one of the foremost of our philosophical physicians," as he said
in an
editorial note to the paper. One of Herz's more practical points was that very
few cases had been subjected to the variolous test, and that of these few some
had yielded an equivocal answer;1 to which Dr. Michaelis, garrison surgeon at
Harburg, replied in a paper of 74 pages that Herz ought to read the report of
the Vaccine Pock Institution of London, showing that 2,110 variolous tests had
been applied in 4,000 vaccinations, and that not one had failed. And besides,
he asks, have there not been many cases tested in Germany? Herz ought therefore
to withdraw his words about very few having been subjected to the test.2
In 1801 Hufeland issued, in his Journal, an Appeal to the Medical Profession
throughout Germany to send in their experiences of cowpoxing. The great
experiment, he wrote, is gradually approaching a conclusion very favourable to
the business and to the wellbeing of mankind. Thousands of instances proclaim
aloud the usefulness of the discovery. But let us have the truth ; failures are
as important to know as successes. Indeed, we have sufficient of successes
already. To investigate the circumstances in which cowpox has failed to protect
will be the best means, in fact the only means, to silence
matical demonstration ; there would be no more of the virus left on the earth,
and it would not arise de novo.
1 Hufeland's Journal, xii. pt. 1, p. 1.
2 Ibid.,
xii. pt. 4, p. 1.
INQUIRY BY PRUSSIAN OFFICIALS.
219
the rumours floating about of the failures and injurious effects of vaccine at
one place or another. To this appeal, he says, in a later number, he had
received a good many replies, of which he did not publish any considerable
number. The most important are those relating to the failures at Oebisfelde and
Bremen already noticed. The balance of evidence, he says, is very much in favour
of Jenner's claims—as if such a question could be settled by setting off so many
failures against so many apparent successes.
An official circular, drawn up by the Ober-Collegium for Medical Affairs and
signed by the minister Graf von der Schulenburg, was issued on
11th July, 1801.
It is addressed to the medical profession in Prussia, and calls for an impartial
scrutiny of the evidence relating to cowpox. It suggests that the new practice
should not be hastily condemned : good things like antimony, Jesuit's bark, and
variolous inoculation (which is now rewarded with State premiums) had been
mistakenly opposed at first. But the experience of several years would be needed
; enthusiasm for the practice should be kept within bounds. Only the qualified
profession should make the trial, and send their results to the sanitary boards
of their respective provinces, according to a blank form subjoined. The
differences between genuine and spurious cowpox are then briefly set forth for
the guidance of those about to make this national trial.
The king, Frederick William III., was at this time interested in the question,
but by no means persuaded. Hofrath Dr. Schulz, body physician to Prince
Ferdinand, having written for leave to vaccinate the children in the
220 THE GERMAN ENDORSEMENT.
garrison at Potsdam, the king replied, from Charlottenburg, 27th June, 1801,
that he considered the evidence hitherto to be ambiguous, and that it would
require several years' experience (the same phrase that was afterwards used in
the official circular of 11th July) in order to form a safe judgment. So long as
there was uncertainty, he could show no public favour to the Jennerian method.
No leave was needed for the children at Potsdam ; it was the personal privilege
of any one to get vaccinated if he pleased.1 In the same impartial tone the king
wrote,2 on the 22nd of August, to Dr. Aronson to acknowledge a copy of his essay
(with the motto Errare humanum est) replying to the objections of Hofrath
Professor Herz and Dr. J. Valentin Miiller.
Opinion within the profession was much divided in Berlin and feeling ran high.
In the Hamburger Correspondent (No. 170, 1801) a "Citizen of Berlin " wrote to
challenge the statement made in a Bremen essay, that "since the introduction of
the new practice, 50,000 had been vaccinated, without a single case of injury
done or of protection failing." As evidence of failure he gives particulars of a
number of cases known to himself in Berlin. A long detailed reply was drawn up
to this by eleven Berlin practitioners concerned in the cases, which were all
satisfactorily excused on one plea or another.3 The cause of cowpox took much
benefit from the alleged attempt of a certain Dr. Wolff, in Berlin, an adherent
of the old inoculation, to pass off smallpox virus, it was said, for cowpox, the
child's parents, who were people
1 Medicin.-Chirurg. Zeitung, 1801, iii. 158.
2 Ibid., 1802, i. 112. 3
Ibid., 1802, i. 138.
RESULTS OF OFFICIAL INQUIRY. 221
of position, having expressed a wish to have the latter used. The child at once
took smallpox and died ; but Wolff protested that it was vaccine which he had
used, and not variolous matter.
Early in the year 1802, the king so far departed from his neutral attitude as to
get himself and his youngest child vaccinated. Hufeland announced the "good news
" in his Journal,1 and added that the infection had been communicated with the
happiest success, as he could personally testify. A few months later, on the 7th
of June, the returns in response to the official circular of
11th July, 1801,
were abstracted and commented on in a report signed by the president, the decanus, and councillors of the Ober-Collegium for Medical and Sanitary
Affairs.2 The return had been made by seventy-one physicians in civil practice
and thirty-six regimental physicians, and it related to 7,445 vaccinations. In
a large number of these, "attempts of every kind" had been made to test the
efficacy of cowpox, not only by inoculation of smallpox, but also by exposing
the vaccinated to the contagion in various ways. Four medical men, whose names
are given, had especially distinguished themselves over these tests ; but the
particular results are published from only one of the four, Dr. Kuster, of
Conitz. He had made sixty vaccinations, and had variolated every one of them
eight to ten days after; not one of the sixty "took," the inoculated spot
having shown redness and inflammation to the third, fourth, or fifth day
only. Not more than four cases had occurred
1 Hufeland's Journal, xiv. pt. I, p. 65.
2 Ibid., xiv. pt. 1, p. 130.
222 THE GERMAN ENDORSEMENT.
in which evidence of protection was wanting, and these raised the question of
the genuineness of the lymph. The Ober-Collegium ends its report with an
eloquent recommendation of the Jennerian method ; at the least, it would protect
from smallpox as well as inoculation with the "natural " disease, and it was
free from the objections to the latter.
This report was made public on the 7th of June, and on the same day a Royal
Proclamation was issued, recommending the general adoption of the Jennerian
practice throughout the Prussian dominions.1 It had not taken so many years'
experience to settle the question as the king's letter of 27th June and the
circular of the nth July, 1801, had indicated. If there was a judicial temper
in some quarters, there was enthusiasm in others.
The course of events in Silesia affords a curious illustration of the hesitancy
for a time on the part of the Prussian king and his councillors. On the 1st of
July 1801, a proclamation2 was issued from the Royal Prussian Kriegs-
und Domainen-Kammer at Breslau, advising all parents throughout Silesia to have
their children vaccinated, and strongly inculcating on all physicians and
surgeons in the province the duty of furthering the vaccine inoculation by every
means in their power. On the 24th of the same month, the Kammer at Breslau
issued another proclamation amending, or rather rescinding the former,
1 Hufelana's Journal, 1802, pt. 3, p. 108.
2 Medicin.-Chirurg. Zeitung. Salzburg,
1801, iii. 159.
ENTHUSIASM AT BRESLAU. 223
which, it is expressly said, had been issued at the special instigation of the
Collegium Medicum of Bresiau. A closer inquiry had meanwhile shown that the
vaccine inoculation was "not yet commendable by the Government as a means of
checking the natural smallpox." The former proclamation should be therefore
amended as follows : "That the cowpox inoculation must still be regarded as a
not infallible protection against smallpox." The incident means officially,
perhaps, nothing more than that Breslau had to wait until Berlin should have
decided ; but it is clear that there was enthusiasm for the new practice in
influential professional circles in Silesia. We are enabled to look a little
behind the scenes here.
The leader of the movement in Breslau was a certain Dr. Friese, who had
translated Woodville's Reports and Aikin's Concise View, and had taken much
pains to circulate De Carro's Vienna treatise. He was joined in the practical
work of vaccinating more especially by seven others in the city, some of them
men of position in official, civil and military circles. From the 23rd December,
1800, to the 25th of June, 1801, these eight had vaccinated 509 children, of
whom a list was published,1 with the name and profession or occupation of the
father in each case. Most of them were the children of well-to-do people. Friese
says that these all escaped the smallpox that was then epidemic, although some
of them were exposed ; he gives two or three trivial instances of exposure to
the contagion, and one or two cases where variolation was done more as an
additional
1 Friese, Kuhpocken-Impfung in Schlesien. Breslau, 1801.
224 THE GERMAN ENDORSEMENT.
protection than as a test, with the curious result in one case that the old
vaccine sores on each arm were inflamed anew on the thirteenth day of the
variolation. There is ample evidence that the people in better circumstances
were willing to try the new method ; but there is nothing in the writings of
Friese to show that he or they had an intelligent acquaintance with the radical
differences between it and the old. There was some opposition in Breslau, which
found expression in a tract, Something more about the Cowpox; but Friese
summarily disposes of it by the usual cry of "merely theoretical."
Another supporter of cowpoxing in Silesia was Dr. Struve, of Gorlitz, the author
of several popular works on the health of children, which were all translated
into English. Struve makes a great point of having been converted from
opposition to the new inoculation by the evidence. The reviewer of his
Introduction to Vaccine Inoculation, in the weekly journal of the German
profession published at Salzburg, says that Struve's own experiences are
nothing exceptional, but that, taken along with his variolous tests, they serve
to establish the advantages of the great discovery. But Struve distinctly admits
the fewness of the variolous tests among his two hundred vaccinations ; if he
had tested them all, he says, it would have been but a small addition to the
thousands of proofs already given. He has the vaguest notion of what cowpox is,
thinks it is smallpox of the cow, and puts down the pustular eruptions, which
some of the children caught, as being the proper eruption of cowpox, whereas it
is beyond doubt that they were an attack of the contagious smallpox then raging
in Gorlitz and the country around.
A LUSATIAN AUTHORITY. 225
He gives only five variolous tests in his
two hundred cases;1 namely, cases 21,
22, and 23, vaccinated on 7th February and variolated on 17th March ; case 79,
vaccinated on 1st March and variolated in April ; and case 167, vaccinated on
23rd April and tested in August. The three on 17th March had been vaccinated
with tenth-day lymph from two children who had ulcers on their arms for a number
of weeks after; whether the stock from their vesicles produced the same effects
we are not told, but as it was taken at the tenth day, it would probably
reproduce its ulcerous properties ; so that we should be really dealing with
the variolous test as tried upon three children with suppuration going on near
to where the smallpox matter was inserted. Of the fourth case we simply read
that the variolous test was without effect. But the remaining case, No. 167,
which was tested four months after vaccination, is given with particulars. It
appears that no cowpox vesicle was produced at all, although there was some
"local and general action." Dr. Struve therefore doubted, as he well might,
whether the vaccinal effect had been produced on the constitution, and on that
account he variolated the child. As that inoculation produced no smallpox, he
felt sure that the cowpox protection had really been imparted. Of course, if
the child had been successfully variolated, or had caught the epidemic smallpox,
it would have been said that the vaccination had failed,—as indeed it had
failed, if the presence of a vaccine vesicle be essential to success.
Throughout these dreary records we constantly meet with palpable fallacies of
that kind, such as no one would dare to present to an assembly of ordinarily
intelligent laymen.2
In the important city of Frankfurt-am-Main, the
1 Anleitung sur Kenntniss und Impfung der Kuhpocken. Breslau, 1802.
2 In Dr. Struve's country of Lusatia, the popular feeling against
vaccination is now very strong, according to the Vienna Fremdenblatt; which adds the following anecdote : A schoolmaster having
asked, "Why was Moses hidden by his mother?" a small pupil
replied, "Because his mother did not want him to be vaccinated."
226 THE GERMAN ENDORSEMENT.
Jennerian inoculation was taken up by no less a person than the anatomist and
surgeon von Sommerring, in conjunction with Dr. Lehr. I advert to it because it
was specially the variolous test that Sommerring directed his attention to.1 He
set to work with all the precision which we might expect from one so thoroughly
practised in the most rigid methods of descriptive anatomy.
Fourteen vaccinated children were brought together to one place, and all
inoculated on the same day with smallpox before witnesses. The smallpox matter
was taken fresh from a child's pustules at the third day of their suppurative
stage, and was inserted by lancet-puncture. The children were kept under
observation, and inspected from time to time by impartial witnesses. By the
second or third day inflammation had arisen at the punctures in them all, and a
papular elevation could be felt ; on the fourth day all the papules had a zone
of redness about half an inch around, and a little yellow fluid at their summits
; on the fifth and sixth days eleven of the fourteen cases showed the papules
become pustules, larger or smaller, filled with yellow matter, the remaining
three cases having aborted from the papular stage ; on the seventh day the
redness began to decline and the pustules to wither ; and on the eighth day the
redness had disappeared, and the pustules become covered with yellowish-brown
semi-transparent crusts. No eruption followed.
This is one of the best-recorded variolous tests in the whole literature of
vaccination. I have taken it from the account in the Salzburg journal, which
omits to say how soon after vaccination the test was applied ; and I have been
unable to supply the omission by reference to Sommerring's original paper; but
the practice of the
1 Summary of Prufung der Schutz-oder Kuhblattern durch Gegenimpfung mit
Kinderblattern. Von Hofrath Sommerring und Dr. Lehr (Frankfurt-am-Main, 1801,
pp. 38), in Med.-Chirurg, Zeitung for 23rd July, 1801.
TESTS BY SOMMERRING. 227
time was to apply the test very soon after (in the sixty cases of the test,
which were the only ones adduced in the Prussian official report upon
vaccination, it was applied on the eighth or tenth day) ; and it seems probable
that a set of children had been vaccinated together and kept together until the
test was undergone. The absence of the general eruption was therefore no marvel;
and in eleven of the fourteen the local infection was complete. Not only so, but
it was such a degree of inoculated smallpox as would have been pronounced a
satisfactory protection, if the variolation had not been to test the
antagonising power of cowpox, but had been an end in itself. The same medical
journal which reproduces that test with approval had asked, only two years
before (23rd May, 1799), when cowpox was a new thing : "Is it worth while
adopting this novelty, seeing that the usual method of inoculation [with
smallpox] is for the. most part undergone so happily that the children hardly
appear to be ill at all ?"
Sommerring, however, was satisfied, and the doctrine of protection was
established in Frankfurt, Certain cases of alleged smallpox after vaccination
were hunted up by Dr. Ehrmann, a rather violent opponent, although a man of
position ; but these, or some of them, were accounted for by Sommerring and
Lehr. Two satirical pieces were published in the city, making out that the new
inoculation was being taken up by enterprising young doctors, in order to
introduce themselves into private practice, or to find a means of supplanting
their old-established but less go-ahead rivals.1 The same motive
1 Med.-Chirurg. Zeitung, 1801, ii. 399.
228 THE GERMAN ENDORSEMENT.
has operated so frequently in the adoption of new medical fashions that it is
quite credible it should have played a part in determining the reception of
cowpoxing and the particular hands into which the new practice should fall.
There are other evidences from Germany that vaccination was in request among
the well-to-do public. Stromeyer, for example, wrote to a London correspondent
from Hanover on the 14th of March, 1800, that, at that early date, most of the
Hanoverian physicians "exclaim against the vaccine inoculation, asking, Are
people thus secured against the smallpox for their whole life-time?
Nevertheless, I have the satisfaction to see a partiality for it displayed by
the greater part of the public."1 But in February, 1801, he is able to say that
the bulk of the profession in Hanover, including all the leading men, were now
in favour of the Jennerian novelty ;2 from which we may infer that they had
found it advisable to supply that sort of article for which their clients showed
a partiality.
It is clear from the bulky handbooks of the new practice that quickly began to
appear in Germany,3 that the period of scrutiny was soon over. Professor Nolde,
of Rostock, had indeed the temerity to say that a much more deliberate and
protracted inquiry was needed, the evidence being insufficient; but his reviewer
in the chief critical organ of the profession tells him that the evidence was
quite sufficient, and indeed conclusive in favour of protection as asserted by
Jenner.4
1 Med. and Phys, Journ., iii. 474.
2 Traite de l'Inoculation. Leipsic, 1801.
3 By Buchholz, 1801 (pp. 542), and by the elder Hecker (pp. 248),
Erfurt, 1802. 4 Hufeland's
Bibliothek, 1802.
HESSIAN EXPERIENCES. 229
In other parts of Germany the new practice was adopted with even less of
scrutiny and discrimination than in Hanover and Prussia. The apostles of cowpox
in Hesse Darmstadt were a certain Professor Hessert, and a Captain Pilger, who
ended by formally adopting the veterinary profession. They started in 1801 a
journal for all matters relating to vaccination,1 which admitted some hostile
papers. A critic of it in Hufeland's Bibliothek expresses the hope, in 1804,
that a journal of that kind will soon be superfluous. Down to June, 1801, they
had performed three thousand vaccinations in Hesse Darmstadt, amidst opposition
or indifference on the part of "so-called learned physicians," but with a kind
of patronage or approval from the sovereign as early as November, 1799. Hesse
Cassel gave origin to another cowpox periodical,2 edited by Dr. Hunold, of
Cassel. At Erfurt, the new practice was taken up by Hecker the elder, professor
of surgery, who twice published upon it. The old smallpox inoculation, he says,
did not make so much progress in the eighty years since its introduction as the
Jennerian inoculation with "smallpox of the cow " had done in two or three
years.3
Of the practice at Leipzig, Stuttgart, and other places there are some extant
memorials, but they furnish no evidence so good as that already given for
Hanover, Frankfurt, and other cities. At Meissen, near Dresden, the failure of
the vaccinations done by Dr. Weigel,4 to
1 Archiv fiir Kithpocken-Impfung. Giessen.
2 Annalen der Kuhpocken-Impfung zur Verbannung der
Blattern. Furth. Part I., 1801.
3 Extracts in Med.-Chirurg. Zeitung, 1802, i. 274.
4 Ibid., p. 282.
230 THE GERMAN ENDORSEMENT.
protect from the smallpox then epidemic, was peculiarly-obvious, and was
admitted, but was at the same time excused with a naïveté which disarms
criticism. These cases of failure were cases of spurious vaccinations, "die freilich nicht vor Kinderblattern schutzen." The
freilich is inimitable, and
cannot be translated. Despite his unfavourable experience of the epidemic, Dr.
Weigel got favourable results by the experimental method. He tried thirteen of
his 121 cases with variolous inoculation, and found them protected.
There are hardly any details in the medical journals of the time to show what
scrutiny the Jennerian doctrine met with in Bavaria before it was accepted ;
the reception of it would seem to have been on faith alone. On the 16th of
August, 1801, a proclamation1 was issued, in which the Commission for Public
Health at Munich, on the initiative of his Serene Highness, urged all medical
practitioners in town and country to apply themselves to the great work with
true patriotic zeal. The new method had already been tried, it seems, with the
best effects ; and parents were demanding it. The voice of experience was waxing
ever louder for the good cause of cowpox inoculation. Children during an
epidemic should not be chosen for trial of its protective virtues. It was
necessary to distinguish carefully between true and spurious vaccine.
At Regensburg an impulse was given to the Jennerian practice by the patronage of
the palace, which made up in part for the absence of
"a good theory of the
1 Med.-Chirurg. Zeitung, 1801, iii. 411..
THE LEADERS IN VIENNA.
231
antagonism between cowpox and smallpox, two unlike diseases," to quote
Schaffer, the Regensburg vaccinator.1 In the country near Erlangen, the cowpox
was discovered, and was found to be a spontaneous affection unconnected with
horse-grease ; its independent origin on the cow's teats gives occasion for the
remark, that it is well known that Jenner's opinion of the origin of the malady
has been long overthrown. The actual finding and identification of cowpox at Erlangen served in a vague and unreasoned way to strengthen the belief in
Jenner.2 In Holstein, not only had the cowpox been found, but, it was alleged,
also the country legend of its protecting from smallpox.3
In Vienna the movement was vigorously started by two men, De Carro and Careno,
one if not both of them graduates of Edinburgh, who must be classed with the
pushing practitioners spoken of in the Frankfurt satires on cowpoxing, the men
who are on the outlook to float themselves into reputation and practice on the
wave of some new fashion. Careno had published some ten years before a popular
catechism of inoculation, which had reached a third edition. Of his enterprise
in the new business the following is an example :—
It happened that Dr. Schulz, of Berlin, body physician to Prince Ferdinand, had
sent to the Czar of Russia a copy of an essay that he had published on the cow-
1 Beitrag zu einer Theorie der Englischen Pocken-Impfung.
Regensburg, 1801.
2 Lavater, " Ueber die Milchblattern," a lecture at Zurich, 1st
December, 1800.
3 Hufeland's Bibliothek, 1801.
232 THE GERMAN ENDORSEMENT.
pox. He received in reply a letter from the Czar,1 stating that the Russian
trials of cowpox up to that time had not turned out quite so well as was to be
desired, and that any physician who could and would practice the protective
inoculation with success might reckon on the applause of the public as well as
the favour of the Czar. Upon that hint, Dr. Schulz repaired to St. Petersburg,
and came back loaded with honours, and enriched with two thousand gold ducats
given him by the Czar. Meanwhile Careno had heard of the Czar's invitation to
any physician who could make the cowpox charm effective, and had sent his
writings also. He did not make such good business out of it as Schulz, but he
received a letter from the Czar, thanking him for his books, and the gift of a
ring set with brilliants.
The practical trial of cowpox at Vienna was one of the earliest made abroad. The
criticism, also, of Jenner's Inquiry was begun earlier, and was done far better
in the weekly medical journal published at Salzburg2 than in any other journal,
English or foreign. Perhaps Ingen-housz had a hand in this. A reviewer of the
Inquiry, 14th January, 1799, remarks upon the fact that cows' smallpox (Kuhblattern)
is claimed in Jenner's title-page as a new disease ("discovered " is Jenner's
word) : the fact that it was only the name variolœ
vaccinœ which was new had
escaped the reviewer. He points out that only three of Jenner's vaccinations had
been tested with smallpox, and that three was too small a number.
1 Med.-Chirurg. Zeitung, 1802, i. 31.
2 Medicinisch-Chirurgische Zeitung.
CRITICISMS OF THE MEDICAL PRESS.
233
The hopes built on such reasoning might be illusory ; there were analogous
cases, he says, under the old practice, in which children supposed to have been
successfully variolated had yet caught smallpox in an epidemic. He counsels
deliberate inquiry and close scrutiny: "that will bring more credit to us
Germans than if we join the English forthwith in beating the big drum." In the
number for 24th October, another pen reviews Woodville's Reports, a book which
was unquestionably a more workmanlike performance than anything of Jenner's.
The reviewer of Woodville thinks that readers of the book can hardly fail to
carry away the impression that cowpoxing was destined to replace smallpox
inoculation ; he discovers, also, that there is some sort of help in it to the
doctrine of animal poisons, and an important contribution to pathogenesis. In
the very same number, a less friendly hand reviews Pearson's Inquiry, and
concludes that much experience is still needed before we can accept the
prophylaxis of cowpox as correct in principle, and give the old variolous
inoculation its dismissal. The next number contains a guarded review of Jenner's
Further Observations, in which it is remarked with obvious irony that "all his
experiences have so fully convinced him of the truth of his original positions
[including horse-grease], that he holds it superfluous to return one syllable of
answer to those who are of a different way of thinking."
The first reference to the practical trial of cowpox at Vienna is on the 23rd of
May, 1799, when "C." writes to give an account of experiments by Dr. F. and Dr.
De C. The writer doubts whether the new protective is really
milder than the
variolous inoculation as then
234 THE GERMAN ENDORSEMENT.
practised, and whether it really does protect. De Carro himself did, in fact,
see enough of cowpox ulceration on the arms to have made him doubt the mildness
of the new protective, if not to have shown him what kind of pox it really was.
He saw, also, enough of failure to protect from smallpox to have satisfied him
that the one kind of pox was altogether irrelevant to the other. The greatest
breakdown with De Carro's lymph, comparable to the fiasco of Oebisfelde, was
near Geneva, the lymph being spurious because it had passed through a
vaccinifer who had had an attack of smallpox five-and-thirty years before.1 He
had other experiences of which we do not know the details, but only the
conclusions. He discovered that the cowpox which forms a large scab, remaining
until the 29th day, is spurious ; this kind does not protect from smallpox. He
allowed himself to make as many spurious varieties as he pleased.
There were two formal variolous testings of cowpox on a considerable scale in
Vienna. One was made in the presence of a good many witnesses on the 14th of
July, 1801, by Drs. Portenschlag and Helm (under the instigation of De Carro),
in the garden of Count Schonborn, upon twenty-one children who had been
cowpoxed (all but one) in March, April, or May preceding. The progress of the
inoculation is not described; what was done was to bring the children back for
inspection on the 23rd July, or tenth day, and on the 29th July, or sixteenth
day, those on the latter date being perhaps
1 "Hochst merkwurdige Erfahrung
uber die Entkraftung des Kuhpockengifte durch
die vorhergegangene Menschenpocken-krankheit." By Dr. De Carro.
Hufeland's
Journal, x. pt. 4. p. 129.
THE VARIOLOUS TEST AT VIENNA. 235
some who did not present themselves on the earlier. When the children were seen
nine or fifteen days after their variolation, none of them were labouring under
smallpox eruption, and only three of the twenty-one had traces of local
suppuration, the inoculated spots having "completely dried up" in the remaining
eighteen.1 That, of course, is peculiarly disappointing as a record of what
really happened. Was there not as much effect of the variolation in each case as
the practice of the time was calculated to produce ? Did not the same medical
journal which records these experiments say on the 23rd of May, 1799, that
variolation "is mostly so happily undergone that the children scarcely appear
to be ill " ?
The other formal trial at Vienna was made on behalf of the Government medical
department at the Allgemeine Krankenhaus on the 12th .of November,
1801,upon
fourteen children who had been vaccinated all together on the 1st of September.
The matter for their variolation was taken from the pustules of a child in the
natural smallpox. They remained a fortnight in the hospital, and were daily
inspected by the Director himself; "but in not one of them did the slightest
trace of smallpox infection declare itself." This means that there was, at all
events, no general eruption, although there may have been, and almost certainly
was, the local pustule. Hofrath Dr. Frank reported the result of this trial3 to
the Government, which, in March following (1802), issued
1 Med.-Chirurg. Zeitung, 1801, iii. 237.
2 Med.-Chirurg. Zeitung, 1802, i. 159 ; also a report of the same by Careno to
the French vaccine commission, ibid., p. 227.
236 THE GERMAN ENDORSEMENT.
a proclamation recommending the general use of vaccine to ward off smallpox. "The prejudices which had at first opposed it," says the biographer Baron,1 "were thus effectually overthrown, and a series of regulations were established
which soon rendered it general in Vienna ; and in no long time smallpox was
almost banished from that capital."
From other parts of the Austrian empire we receive no evidence of scrutiny or
scepticism. From Prague the first report3 is that Dr.
O. Keilly had vaccinated
twenty persons by the month of June, 1801, and had publicly declared that he
would answer for it that every one vaccinated by him (O. Keilly) would never be
attacked by smallpox.
The enthusiasm for the new kind of protective is well shown in the projects that
were at once started for extending it to other diseases besides smallpox. De Carro found evidence at Constantinople that cowpox was an antidote also to the
plague; six thousand had been cowpoxed in that city and not one of them had
taken the plague ; there were villages near the capital where true cowpox of the
teats occurred, and it was the unanimous testimony of the residents that
neither plague nor smallpox ever entered them.3 Struve believed that vac-
1 L. c, i. 525. ,
2 Med.-Chirurg. Zeitung, June, 1801.
3 Journal de Med., vii. 355 ; Jenner (in Baron, ii. 13) did not
like this extension of the area of cowpox prophylaxis : "I will
just drop a hint—the vaccine disease, in my opinion, is not a preventive of the smallpox, but the smallpox itself. . . . Now, if it
should ever be discovered that the plague is a variety of some
milder disease," etc.
PROTECTION FROM OTHER DISEASES.
237
cination moderated the severity of scarlet fever, if it did not prevent the
attack ; and Careno found reason to adopt the same opinion. Various sanguine
expectations of the same kind were floating about also in England, but the only
practice that was seriously tried was to vaccinate puppies against the
distemper. It need hardly be said that the cowpoxing turned out to be purely
irrelevant.1 But there was one significant attempt to extend the area of vaccine
usefulness which demands a more particular notice.
If cowpox could ward off human smallpox, it would have been a very strange thing
if it did not also serve to protect the sheep from the variolous contagion to
which they were peculiarly exposed in some parts of the Continent. The sheep-pox
is a true smallpox of sheep ; it is variola ovina, properly so called in respect
of its being a highly contagious pustular skin-complaint, indistinguishable in
almost any point from the smallpox of man. The cowpox was no sooner given out as
a means of anticipating the natural or epidemic incidence of human smallpox than
it was tried for the protection of the flock-master from his heavy periodical
losses. Viborg, the Copenhagen veterinary authority, was very busy in those
years with all questions relating to smallpox or other poxes of animals, and
from him I take the following :2—
1 Jenner vaccinated the king's staghounds in June, 1801 (Baron,
i. 444). Eight years after, he published in the Med.-Chirurg. Trans.
(vol. i.) a paper on the dog-distemper, of no value clinicaliy or
pathologically, and omitting all reference to vaccination as a protective.
2 Abstract in Med. and Phys. Journ., 1802, viii. p. 271.
238 THE GERMAN ENDORSEMENT.
"It is known, from the observations of French physicians, that cowpox defends
the sheep against the sheep-pox infection, in the same manner as it secures men
from the smallpox ; which seems evidently to prove the identity of the cowpox
and the sheep-pox." Viborg ought to have known that the identity of cowpox and
sheep-pox was not to be proved either by the verbal jingle of the names or by a
piece of speculative reasoning. Viborg, like all veterinarians, doubtless
prided himself upon being a practical man ; but his manner of proving the
identity of cowpox and sheep-pox might have been learned of the Schoolmen. It is
clear that he accepts the French doctrine of the prophylaxis of cowpox against
variola ovina ; and why should he not, if cowpox wards off variola
humana? As a
matter of fact, the vaccine inoculation does not ward off the smallpox of sheep,
although it "takes" in them just as in man. It has turned out a commercial
failure; and, as flock-masters are in a position to take a thoroughly
businesslike view of the matter, they have not scrupled to abandon the
practice. The evidence of its failure will be referred to in the chapter on
vaccination in Italy.
239 CHAPTER
10.
RECEPTION OF COWPOX IN FRANCE.
FOR reasons both inherent in the national character and depending on the
circumstances of the time, the reception of cowpox inoculation in France could
not have been a mere echo of the verdict of superior persons in England or of
professors in Germany. There is something in the best French writings on the new
inoculation, whether in favour of it or adverse to it, which makes them at once
more readable and more worthy of serious attention. The verdict of France having
been just as decidedly favourable as that of England and of Germany, it becomes
a matter of fresh interest to understand how this great nation, still breathing
a spirit of scrutiny and rationalism, should have been hoodwinked into adopting
a medical dogma which had as little scientific basis in the pages of Jenner as
it had in the foolish heads of some Gloucestershire old women.
It is in the reception of Jenner's project by the French that we see most
clearly the insidious working of his disingenuous title-page. The French knew
nothing of cowpox at home, or at least had no corresponding word in their
language; from the very first they took Jenner's trumped-up name of variolœ
vaccinœ in good
240 RECEPTION OF COWPOX IN FRANCE.
faith, and constantly spoke of cowpox as petite verole des vaches, or smallpox
of the cow, until the ingenious abbreviation of "vaccine" came into general
currency. Thus, the translation of Woodville's Reports by Aubert in 1800, before
the practice had begun in France, bore the title Cowpox,
ou la Petite Verole des
Vaches, substitutee a la petite verole. Even the most acute of all the critics
that vaccination called forth, in France or elsewhere, in those years, Dr. Jean Verdier, did not quite fathom the enormity of Jenner's great title-page trick.
Verdier, a man of varied fortunes, who had made his mark five-and-thirty years
before by his medico-legal treatises, published in 1801 a sixteen-page pamphlet
on vaccination,1 which the wearied traveller through dusty files of journals and
essays comes upon as an oasis in the desert.
One sentence of it only concerns us at present: "The country people in England,
as well as the doctors, have represented the vaccine disease as being the
smallpox itself. That is a good thing for inspiring confidence ; but,
unfortunately, the two diseases have nothing in common, and so the ground of
protection falls through (et voila le fondement du
preservatif ecroule)." But,
to do the farmers and milkers in the dairy districts the justice that is due to
them, they never represented cowpox to be anything but the pox-sores which they
knew by painful experience. There was, indeed, the foolish legend, more at home
in the empty heads of idle gossips than among those who knew by experience what
the cowpox was, that the affected milkers carried a charm against the
1 Tableaux analytiques et critiques de la Vaccine et de la Vaccination.
Paris, An ix. Germinal.
JENNER'S TRICK NOT FOUND OUT 241
smallpox, just as the plant hound's-tongue gave to those who carried it on their
persons a protection against a mad dog ; but there is not a particle of evidence
that the rustic ideas about cowpox identified it in its nature with smallpox. On
the contrary, the milkers would associate it then, as they are said to do now,
in some vague way with the "bad disorder," and be disposed to be somewhat
shame-faced over it. It was Jenner, and Jenner alone, who called the cowpox
"smallpox of the cow," having insidiously placed the name in Latin on the
forefront of his Inquiry, and then carefully abstained in the preface and text
from ever once saying that he had given the disease of the cows and milkers a
new name, or why he had given it a new name. Even so trenchant a critic as Verdier was hardly prepared to find that an Englishman, whose designation of
F.R.S. proclaimed him to be of academical rank, should be wanting in the
rudiments of common candour. The trick of the title-page had relatively more
effect in France than elsewhere ; it implanted an illusory idea as to the nature
of cowpox, which at once found expression in the French name, and became the
more fixed in the minds of the French profession of medicine by reason of their
having few or none of those first-hand experiences of the shocking nature of
cowpox in the cow which the English were not wanting in.
There was another reason why inoculation with smallpox of the cow should
prepossess the French mind favourably. The original inoculation with human
smallpox had been thoroughly discredited in France on account of its palpable
disadvantages, and had fallen into almost total neglect. It began to revive
somewhat in the years immediately preceding the appearance of Jenner on the
242 RECEPTION OF COWPOX IN FRANCE.
scene ; but even Goetz, the Paris variolator of most repute about 1798, averaged
hardly more than a hundred cases in the year ; and in the public services
inoculation was not practised except among the pupils of the Ecole Militaire,
"where Gatti did not, indeed, have brilliant success."1 The rival plan of
checking the heavy mortality from smallpox among infants and children, by
rigorous isolation of the sick, which appears to have been taken up by Juncker
and others in Germany, and found an English advocate in Haygarth, was in those
years seriously entertained in France. But the petite verole des vaches was
admittedly free from the great objection to inoculated petite verole itself,
however unaccountable the non-contagiousness of the former might be. The new
inoculation had therefore a clear field in France ; it seemed to promise all the
easiness of the old inoculation without the drawback of contagiousness, while,
on the other hand, the arduous nature of the isolation-plan, although never
realized, was so clearly foreseen as to make any safe alternative welcome.
While the Paris physicians were thus favourably disposed towards the Jennerian
inoculation, they had no intention of formally accepting it and recommending it
without rigid scrutiny. A public subscription was raised, and a vaccine station
opened in the month Floreal, an viii. (1800), with the following objects: "to
repeat the experiences of the English ; to seek for new experience ; to add to
the number of variolous tests ; to investigate the truth of all the rumours
current as to
1 Salmade, La Pratique de L'Inoculation. Paris, An vii. (1798), p. 6.
COMITE CENTRAL DE VACCINE. 243
the alleged disastrous effects of vaccine." These inquiries were conducted by a Comite Central de Vaccine, composed of twelve medical men of character and
repute, with Thouret as chairman. Among the other members were Guillotin, who
had played a part in the Revolution, Leroux, professor at the Ecole de Medecine
(one of the editors of the Journal de Medecine, which began to appear in 1801,
and became the organ of the vaccinists), and Salmade, who had published a
treatise advocating the reintroduction of the smallpox inoculation in the very
year (1798) in which Jenner's Inquiry appeared. The Comite Central were three
years in issuing their final report (1803), which was a bulky, prolix document
that few were likely to read. But they published a good many interim reports in
the journals,1 which practically committed them to the new practice from the
outset.
On 28 Vendemiaire, an ix., they published a few variolous tests2 which, as we
shall see, were ambiguous if not altogether irrelevant; and although they
professed to be "far from regarding the evidence as sufficient," yet they had
observed a protective action of vaccine in those whom they had "reinoculated"
with smallpox. A few months later (29 Pluviose, an ix.) they announced that
grave mistakes had been made in vaccinating ; there was a kind of vaccine,
non-protective from smallpox, which is known as spurious vaccine (fausse
vaccine)? On 21 Germinal, the protective power of vaccine, "if not
demonstrated, is on
1 Moniteur, Journal de Paris, and Journal de Medecine.
2 Journ. de Med., i. (1801), p. 254. 3
Ibid., ii. 27.
244 RECEPTION OF COWPOX IN FRANCE.
the point of being so."1 On 3 Prairial, they return to the subject of spurious
vaccine: "The Committee, in several of the notes which it has published, has
been careful to premise that, under certain circumstances, the vaccine
inoculation may not follow its regular course in certain subjects, and may give
rise to a false vaccine which affords no protection from smallpox." They then
refer to the notorious cases near Geneva, and to "cases that have occurred
quite recently under our own eyes in one of the villages near Paris." 3
The strongest report is that of 30 Brumaire, an x.3 A long and uniform
experience had convinced the Committee that the dangers of vaccine were few. But
it remained to assure themselves of its protective power, and more particularly
to find out if the protection lasted more than a year. Accordingly they invited
a large number of representative physicians and surgeons in Paris to witness the
variolous test at four sittings upon 102 infants, some of whom had been
vaccinated a year before and a few of them eighteen months before. The results
are certified by all the invited witnesses ; who included eight members of the
Institute, fourteen physicians of the ci-devant Faculty of Medicine, six
professors of the Ecole de Medecine, five members of the Army Board of Health;
four members of the Societe de l'Ecole de Medecine (Bichat, Dupuytren, Auvity,
and Alibert), and thirteen others. This, of course, was a great demonstration ;
but it only amounted to an atestation that inoculated smallpox produced no
effect
1 Journ. de Med., ii. 162. 3 Ibid., iii. 303.
2 Ibid., ii. 307.
DR. JOSEPH VAUME.
245
in most of the infants, and merely the local pustule in the rest. The Committee,
however, in their next report, concluded that the results of the trial on the
102 infants ought to dissipate all uncertainty as to the duration of the vaccine
protective power.
Before remarking on the nature of the evidence which, in all good faith, served
to convince the Comite Central, we may notice the criticisms that reached them
from without, at successive stages of their inquiry. Their most trenchant critic
was Verdier, who appeared only once in the field ; the other considerable
antagonist was Dr. Joseph Vaume, a retired surgeon-major, who issued three
pamphlets.1 The Committee replied to Vaume's several objections in the
newspapers of the day, making him speak, as Vaume complained, in language of
their own choosing; his own rejoinders were refused admission by editors, and
at the end of his third pamphlet he explains that, "whether they answer me or
whether they keep silence, this is the last time that I address the public on
these chimaeras. I have brought the dangers of them under notice ; my task is
fulfilled."
Vaume's objections were partly of the dialectical sort, which the Committee had,
of course no patience with, and made no answer to, and partly founded on the
results of vaccination as observed by himself. He produced affidavits of
several disasters and deaths from vaccine in Paris, which the Committee met by
denials
1 (1) Reflexions sur la nouvelle Methode d'inoculer la petite Verole avec le
Virus des Vaches, Paris, An viii. ; (2) Les Dangers de la Vaccine, An ix.
Germinal; (3) Nouvelles Preuves des Dangers de la Vaccine, An ix. Prairial.
246 RECEPTION OF COWPOX IN FRANCE.
or explanations. He scrutinized the variolous tests, pointing out that the very
infant whose vaccine vesicles were selected from among those of thirty others
for the purpose of being sketched and engraved as typical had well-marked
variolous pustules, and fever on the eighth day, when it was tested three months
after. He insisted that no conclusion could be drawn from the negative results
of a variolous test unless a sufficient interval, a year at least, had elapsed
before trying it; and he asked leave to apply the variolous test himself.
It would take many years of common experience, he said, to prove the alleged
protective power of cowpox. As to the plea of spurious vaccine, politeness
hardly allowed him to speak plainly : "Those who do not know your morality," he
writes to the Committee, "might believe that this spurious vaccine is nothing
but a subterfuge. I am far from entertaining that idea of the respectable
members who compose the committee."1 It was a matter of surprise to him that, in
an hour when miracles were discredited in France, they should be taking
seriously this miraculous virtue of the cows in a single district of England to
preserve the whole human race from one of the greatest of its scourges. Do not
forget, he exclaims, that this pretended specific has taken its rise in a
country which has been fertile in fantastic projects. Medical men in England
have a leaning towards charlatanism and system-making ; they have already led us
astray with their project of rejuvenescence by transfusion of blood, with their
nitric acid and muriatic acid as infallible remedies for syphilis.
1 Les Dangers, etc., p. 35.
VERDIER'S CRITICISM 247
To-day it is a disease of their cows that they would inoculate upon us.
Dr. Vaume delivered his mind, and retired from the unequal contest. Dr.
Verdier's arrows of criticism were not less ineffectual against the stolid
appeals to experiment and future experience. The reception accorded to Jenner,
he begins, had been as brilliant as that given to the most celebrated
innovators; still, his friends complain bitterly of being contradicted, and they
denounce every opponent as an enemy of the truth. It was every one's duty to be
on guard against enthusiasm and authority touching a matter which had to conform
entirely to the general principles of medicine, or to the same reasoned
experience upon which those principles rested. The vaccinists appeal to
experience, and set aside all objections founded on the unlikeness of cowpox to
smallpox. We are to be made invulnerable by vaccine as Achilles was made
invulnerable by being bathed in the waters of the Styx. The prophylaxis by
cowpox is a contradiction of the received doctrine of protection by inoculating
the smallpox. It is in vain to appeal to experience against established
principles ; for true principles are the result of the experience of all ages,
and become the touchstone of each successive empirical innovation.
You have hastily taken this on trust, he continues, from the English, who are
more eager for medical novelties than any other nation ; their reports are
defective, unfaithful, often disfigured, and so drawn up as to serve only the
glory of vaccine. Jenner's doctrine is "un systeme romanesque," which the
natural course of things has already disavowed in its most considerable part
[horse-grease]; he deals merely in conjectures,
248 RECEPTION OF COWPOX IN FRANCE.
most of which are refuted by his own data, although he erects them into
indisputable axioms. In one place he depicts cowpox as a very grave malady, and
in another place tells us that it hardly deserves to be reckoned a disease at
all. Everywhere there is inexactitude, vagueness, and palpable contradiction.
To prove protection, cases are adduced by the thousand, but few details are ever
given. We have more assurances than observations. The variolous tests are not
reported with sufficient detail, and what little is said about them indicates a
heedlessness which is not compatible with the scrupulous exactitude of true
observers. All failures are ascribed to spuriousness of the vaccine, although it
had come from the same source as matter counted genuine. If smallpox befals the
vaccinated, the germs of it had been received before. If a fever follows the
variolous test, it is not the fever of smallpox, but a fever of irritation. The
after-effects of the cowpox virus could not be learned by keeping the children
under observation only a few days.
If it be a virus, as you say, then it must change the whole mass of the humours.
It is an unprecedented piece of foolhardiness not to follow up its after-effects
; we know that it invades the body by the lymphatics, and that it has no grand
depuratory crisis for its elimination ; it may linger long; and what slow
effects, what ravages, may it not produce with the lapse of time ? It may lead
to a degradation of the national temperament, just as a general inoculation with
syphilitic virus would do. He does not question the merits of the Comite
Central; but they are mistaken in seeking merely to be propagandists ; they
ought also to verify. Every case should be
A WARNING AGAINST ENTHUSIASM.
249
done under their own eyes, and every one should be tested afterwards by able
variolators. A complete record should be given of all the after-effects of
vaccine, cutaneous, lymphatic and other, and of all cases where smallpox has
followed vaccination. Lastly, there should be public conferences, where the new
project might be discussed with as little of jealousy as of enthusiasm.
The most obnoxious part of Verdier's criticism was his appeal to scientific
method. He entitled his pamphlet Tableaux Analytiques et Critiques, and boldly
asserted that the whole movement in favour of cow-poxing had been characterized
by disregard of the analytic method of Bacon, Locke, and Condillac. There had
been numerous instances before that, he said, of credulity being encouraged by
medical men of the first rank. Enthusiasm could always be got up for some
doctrine and practice which promised great benefits with little trouble, which
called for no reflection, and secretly fostered the blind workings of cupidity.
On the other hand, let any one announce the most valuable discovery, based upon
natural laws, but flouting men's prejudices and demanding close study to
apprehend it, as well as much work and expense to give effect to it—such an
one will be met by contradiction, calumny, and persecution.
This line of remark, which all who know the history of medicine will recognise
to be sufficiently just, called forth a reply from Marescheau, a physician of
the Montpellier school, which the Comite Central thought so well of as to
publish.1 The Montpellier doctor, who
1 Journ. de Med, ii. (1801) p. 340.
250 RECEPTION OF COWPOX IN FRANCE.
had some reason for asserting the philosophical character of medical writings in
so far as his own school was concerned, challenged the accusation of Verdier,
that the method of Bacon, Locke, and Condillac had been neglected by the
advocates of vaccine. That is to accuse, he replies, those who are really the
disciples of these great men, the professors of clinical medicine in the schools
of Vienna, London, Paris and Montpellier, of having all at once forgotten or
neglected a method which has been long familiar to them. Jenner himself had
followed the analytic method, he had taken up the question from every point of
view, he had done all that the most severe analyst should do.
This, of course, is the mythical Jenner so often held up to our admiration in
this country. Verdier, who seems to have read Jenner's writings at first hand,
had found out the crudities, contradictions, and absurdities with which they
abound.
But the Montpellier defender had clearly not given himself so much trouble ; in
the enthusiasm of the hour, he had taken without scrutiny the romantic story
which Jenner in 1801 had given in his "concise history" of the origin of
cowpoxing, as if it had been historical truth. That brief narrative of years of
thought and toil, of difficulties encountered and manfully surmounted, is the
grand source of all the nonsense which men, known for their ability, rectitude,
and even erudition, have written about Jenner's "caution, accuracy, fairness and
modesty."1 It is impossible for any one of average intelligence or
1 Choulant, "Ed. Jenner," in Zeitgenossen. Leipzig, 1829. pt. vii. p. 20.
THE VARIOLOUS TEST IN PARIS.
251
acuteness to study the Inquiry and the Further Observations, and apply to them
such terms as these.
Vaume and Verdier can hardly have made much impression upon public and
professional opinion in Paris ; they had to depend upon their pamphlets, whereas
the supporters of Jenner had the press, lay and medical, open to them.1
Moreover, Vaume and Verdier, although not perhaps variolators themselves, had a
certain tenderness for what they considered the legitimate kind of protective
inoculation ; and, like the anti-vaccinists in England, Vaume, at least, did not
see, or shrank from dwelling upon, the radical fallacy of the variolous test. It
was the variolous test that appealed most strongly to the imaginations of all,
and that gained for vaccination an assent which was given quite honestly
according to the stating of the case, or according as the premisses were
apprehended. In two former chapters I have pointed out that variolation in those
years had come to be the mere shadow of its old self, and that the operation
when resorted to for testing the protective power of cowpox often gave a result
which would have been thought satisfactory if variolation had been the end
itself and not the test of a rival protective. It was the irony of the
situation that the most resolute opponents of vaccination were precluded by
their own commitments from attacking it on its most specious and at the same
time its weakest side. We have now to make this clear with special reference to
the acceptance of cowpoxing in France.
One of the Comite Central de Vaccine, whose name is appended to all the interim
reports, was Salmade, who
1 Vaume, Nouvelles Preuves. An ix.
252 RECEPTION OF COWPOX IX FRANCE.
had published his practical treatise on Variolous Inoculation 1 only two years
before he joined the Vaccine Committee. It was he who applied the variolous
test in some, if not in all or most, of the cases that were publicly tried. The
mode of variolation described in his book is the English or Suttonian method of
the period ; he names two French inoculators who had lately gone to England to
learn how to inoculate large numbers at once, with a view to the revival of the
practice in France. He does not quite adopt the arm-to-arm plan of variolating
which had been used by Gatti, was the farthest development of the Suttonian
imposture, and was the plan that Jenner insidiously recommended to his readers
when the variolous test of cowpox was to be tried. He says there are physicians
who "think they have observed that when the variolous pus for inoculation is
taken always from inoculated arms through a succession of cases, the smallpox
becomes at length weakened to the point of nullity, so that the later
inoculations produce no effect."2 The grand success of Sutton, he tells us, was
ascribed by Chandler to the fact that he used the crude moisture from a case of
inoculated smallpox at a stage prior to the eruptive fever, and therefore from
the local pustule—the very thing which Jenner himself did in his testing
experiment for cowpox, and advised all others to do. Salmade knew well the
significance of that practice; for himself, however, he gives it as "more
prudent" to take the matter for inoculation from a case of the natural smallpox,
of the discrete or mild type : probably "more prudent" because the
other mode
1 La Pratique de
l'Inoculation. Paris, An vii.
(1798). 2 L.c, p. 15.
AN OLD PRECAUTION OVERLOOKED. 253
might produce nothing at all. He is, however, quite Suttonian in spirit: "The
best, the most fortunate smallpox is that in which there are few pustules, or
even none."1 That was the teaching enforced by Goetz, the best
reputed Paris variolator of his time. "A grand principle," he says elsewhere,
"is that the presence of pustules (boutons) is not necessary to the manifestation of
smallpox. The appearance of the fever after inoculation is the one essential
thing so as to be certain that this operation has had the effect of
communicating the smallpox." Only the most minute quantity of variolous virus
was required—not more than the point of a lancet would take up.2
One precaution dwelt upon by Salmade in his directions for inoculation (1798)
was singularly ignored when the variolation was done as a test, at least in the
earlier of the Paris trials. It is a precaution that was originally stated by Heberden, in the following words quoted with approval by Woodville
3 in 1796,
but disregarded by him also in his tests of the validity of cowpox at the
Inoculation Hospital in 1799 : "It seems a reasonable practice to take some
care, at the time of his receiving the infection of the smallpocks, that the
person should be as free as may be from any other distemper ; lest nature should
be hindered in producing, maturating, or rightly discharging them."
Salmade's version of the law thus stated by Heberden is as follows :4 " It
sometimes happens that the patient,
1 L.c, p. 55. 2
L.c, p. 59.
3 History of the Inoculation of the Smallpox in Great Britain.
Lond., 1796, p. 327.
4 L.c., p. 157. 1798 (before he knew of cowpox).
254 RECEPTION OF COWPOX IN FRANCE.
at the moment when he is inoculated, finds himself attacked by some principle
of disease alien to the smallpox ; if that morbific principle should be in
greater abundance than the variolous virus, or more disposed than it to coction,
nature will occupy herself in the first instance with the malady pre-existing at
the time of inoculation ; the effect of the latter operation is accordingly
suspended until after the termination of the first ailment, and the smallpox
does not declare itself until later." More probably the smallpox will not
declare itself at all as the sequel of an inoculated virus, but will abort there
and then with the drying up of the local pustule.
Now the cowpox, on the showing of the vaccinists themselves, was such a
preoccupying disease ; it was a considerable lesion of the skin at the very
spot where the variolous virus was to be applied in the way of a test, it was an
affection of the absorbent glands, and a brief constitutional disturbance. What
are we to say, then, of that German, specially commended for his zeal in the
testing business, and alone quoted by the Berlin Ober-Collegium, who variolated
sixty persons from the eighth to the tenth day after they were vaccinated ?
Moreover, in these early days, in Paris as well as elsewhere, the vaccine sores
were apt to keep active under the scab beyond the average period. Let us now
take the particular evidence of Dr. Voisin,1 who introduced vaccination at
Versailles, and is a better than average instance of the scientific qualities of
the first vaccinists.
Dr. Voisin is very severe on mere a priori objections ; they have long since
been banished, he says, from medi-
1 Memoire sur la Vaccine. Versailles, An ix.
EXPERIENCE AT VERSAILLES.
255
cine ; it is by facts alone, by observations and experiments, that we can
either establish or overthrow the utility of vaccination as a substitute for
variolous inoculation. He had himself practised the latter mode for fifteen
years, and would welcome something in place of it. He had done 218 vaccinations.
The crusts often remained on the arms until the 30th, 40th, and even 45th day
(which means suppuration underneath). His variolous tests were confined to seven
children in the Hospice Civil. They were done in the presence of witnesses, some
time within the first four months of his vaccine practice, but how long after
vaccination in each case we are not told, although we are told much else. The
variolous matter was taken from a case of natural smallpox in full suppuration,
and was inserted by lancet-puncture at a spot (on the thigh or other arm) remote
from the vaccine. Inspected on the ninth day, four of the seven had the spots
dried up and all traces gone, two had variolous pustules, and one had a red spot
without elevation : on the eleventh day, one of the pustular cases had
progressed to farther suppuration and to efflorescence around; on the
thirteenth day, the suppuration had dried up.
Such is Dr. Voisin's experimental record. His experience, on the other hand,
gave him twelve cases of natural epidemic smallpox among his vaccinated
children, but these were all concurrent with and not subsequent to the
vaccine. In others who had eruptions subsequent to vaccine, the eruptions were
more " ike those known commonly as petite verole volante."
Three of his
vaccinations turned out to be spurious, but why spurious he does not say. One
cannot help thinking
256 RECEPTION OF COWPOX IN FRANCE.
that a little less of vapouring about experiment and experience, and a little
more scrutiny of the premisses of the whole matter, and of the several notions
and propositions contained within them, would have made him a more competent
judge.
The variolous test was applied in Paris by Dr. Colon, with a very neat result;
but for some reason the Societe de Medecine, before whom his report was read,
declined to publish it.1 Dr. Colon was really the pioneer of vaccination in
Paris, and not different from other vaccinators, except that he made no
pretensions to be a disinterested friend of mankind, but a man of business ; he
was constantly denounced, however, by the Comite Central, and by the academical
physicians generally, as a charlatan.
He tested forty-nine children with matter from a child in the tenth day of a
copious smallpox eruption. Forty-seven of these had been vaccinated successfully
at odd times during the previous twelve months, one had been three times
vaccinated without effect, and one had never been vaccinated. The children were
to be visited in the succeeding days, and notes made on a uniform plan by
physicians told off for that duty in the several districts of the city ; the
physicians re-ssembled at Dr. Colon's on 30 Thermidor, when the following
results were disclosed :2—
Forty-three had either no action at the inoculated spots, or had then no traces
of such action, or had no traces left except dry crusts more or less ready to
fall;
1 F. Colon, M.D., Observations critiques sur le Rapport du
Comite central de Vaccine. Paris, An xi. (1803).
2 Precis des Contre-Epreuves Varioliques. Paris, An ix. (1S01).
DR. COLON'S EVIDENCE. 257
Two had still redness at the inoculated spots ;
Two had not only the crust of the primary variolous pustule remaining, but also
one or two pustules on the skin around ;
One (thrice vaccinated, but each time without effect) had a few pustules on the
variolated arm as well as on the body generally ;
One (never vaccinated) had an ordinary smallpox eruption of the discrete type.
This is all to the glory of cowpox in a fine crescendo. But if (changing the
figure) we shuffle the forty-nine cards for ourselves, we shall find that a
certain proportion had effects of variolation, and a certain proportion had
none ; if we had the dates of vaccination, we should perhaps be able to explain
why some of the variolations aborted. The forty-three who are meant to weigh so
heavily in the scale are conveniently lumped together as if they all had the
same import; but, as an unknown proportion of them had, even at the date of
inspection, evidence of recent variolous action, and another unknown proportion
at the same date had actually the smallpox crust still adhering, the import was
clearly various, and one part of it counterbalanced the other. It is idle to say
that the local pustule meant nothing without the eruptive fever; the state of
the variolated children is not certified until a period when their pustules were
scabbed, and who knows whether there had been the constitutional disturbance or
not ? To have admitted the fever premonitory of the general eruption, even if no
such eruption had followed, would have been fatal to the point at issue in the
variolous test; for according to the French variolators of the time, as their
practice is expounded in the treatise of Salmade (1798), the fever alone was
sufficient indication that the inoculated variolous virus had "held." If the
same degree of fever
258 RECEPTION OF COWPOX IN FRANCE.
(of course with the local pustule) had followed the variolous virus when used as
a test, it would have been a clear inference that, other things being equal, the
antecedent cowpoxing had not prevented the variolous virus from "holding" to
the same extent.
The Comite Central itself, for all its horror of the charlatanism of Dr. Colon,
gradually drifted into a way of withholding relevant particulars, of lumping
together the several pieces of evidence, and of declining to canvass the data
up and down so as to get at the truth of them—just as Colon himself might have
done. They report their first variolous tests on 28 Vendemiaire, an ix. :—
They were done in three groups : four children on 3 Fructidor, an viii., three
months after the vaccinations; eleven on a later date, two months after
vaccination ; and four on another day. also "about" two months after
vaccination. The last four all had the correct variolous pustule, matter from
which produced the ordinary smallpox of inoculation ; the eleven had none of
them anything to show for their variolation ; and of the first group of four,
only one, the child Blondeau (whose vaccine vesicles had been so fine that they
were selected for making a picture of), had the variolous pustule and the
eruptive fever.1
That is the rather meagre or summary account as given by the Comite Central
itself. The cases were known, however, to Dr. Vaume, who gives a version of them
somewhat less favourable to the test, which it would be tedious to reproduce.2
In the great variolous test3 of the Comite Central upon
1 Journ. de Med., i. 254.
2 See Les Dangers de la Vaccine.
3 Journ. de Med., iii. 303.
THE DECISIVE TEST IN PARIS.
259
one hundred and two vaccinated children, which was certified by so many of the
day's distinguished names and was perhaps the greatest testimonial that the
cow-poxing enterprise called forth, the most essential fact in each case, namely
the date of vaccination, is systematically omitted. The test took place at four
sittings of the Comite Central and their numerous distinguished assessors at the
Ecole de Medecine, on 23 and 30 Vendemiaire, an i