The Great Events by Famous Historians [Volumes 1-14]

Of all classes of men with whom it has been the fortune of the writer of this sketch to associate, there is none, in his opinion, so generally and so truly amiable as the naturalists. The contemplation of nature seldom fails to produce an elevation of character; it also begets a sweetness of disposition flowing from a sense of what is beautiful in creation; and the evidences of beneficence, everywhere so abundant, soften the feelings and impart to the individual a sincere benevolence of heart. This disposition was strikingly manifested in Jenner, to whose affection, kindness, meekness, good-will, and benevolence so many have borne the most ample testimony. It was no uncommon thing for Jenner to be accompanied in his daily professional tour of many miles by friends, who have eagerly listened to the outpourings of his mind called forth by the beauties which in the vale of Gloucester surrounded him.

His observations on the structure and economy of the various objects of natural history were delivered with the most captivating simplicity and ingenuity. Full of information himself, he delighted to impart it, and was equally solicitous of obtaining a return from others. He was an enthusiast in his devotion to nature, and he anxiously desired that all should participate in the gratification which such a study never failed to afford. He united in an especial manner a talent for the most profound observations to a disposition most lively and ardent distinguished by mirth, playfulness, and wit. With these powers, it is not surprising that his society should have been much courted; and, fully engaged as he was by the duties of an extensive practice, he yet found time to cultivate an acquaintance with polite literature. Many little productions of his muse have appeared in print; they were addressed to some of his more favored correspondents, or occasionally read at convivial meetings, and display the turn of his mind, the benevolence of his disposition, and the liveliness of his imagination. His best poetical productions find their subjects in natural history. The Signs of Rain unites the accuracy of the naturalist with the fancy of the poet.

Jenner had nearly passed half a century before he made known to the world his experiments and investigations relative to the vaccine disease. His first successful vaccination was made May 14, 1769. His ardor from an early period had been noticed, and it took its rise from the following accidental circumstance. While a pupil with Mr. Ludlow, a young countrywoman applied for advice. The subject of smallpox was mentioned, upon which she observed, "I cannot take that disease, for I have had the cowpox." This was sufficient to excite the attention of Jenner, and the incident never escaped his recollection. It is easier to conceive than to express the emotions which would naturally spring from reflection on such a subject; his benevolent feelings were at once aroused to full activity; he pictured to himself all the horrors of that pestilential and most loathsome disease, disfiguring Nature's greatest work, slaying thousands upon thousands, and he was yet sufficiently young to recollect the severity of discipline to which he had himself submitted in the process preparatory to the practice of inoculation, which, to use his own words, in that day was no less than that of "bleeding till the blood was thin; purging till the body was wasted to a skeleton; and starving on vegetable diet to keep it so."

The patience manifested by Jenner in the prosecution of his inquiry into the cowpox, the scrutiny to which he subjected every appearance that presented itself, and the fortitude with which he withstood every untoward circumstance entitle him to all praise and show forth his great capabilities for conducting a philosophical investigation. He divested the subject of all its difficulties and obscurities, and gave to "vague, inapplicable and useless rumor the certainty and precision of scientific knowledge." The extent of his anticipations upon this truly momentous subject do not appear to have been fully stated until 1780, ten years subsequent to his mention of it to John Hunter. He then confidentially disclosed to his intimate friend, Edward Gardner—who gave evidence upon the subject before the committee of the House of Commons—the opinions he entertained upon the natural history of the cowpox; dated its origin from the diseased heel of a horse; alluded to the different diseases with which the hands of the milkers became affected from handling the infected cows; distinguished that which was calculated to afford security against the smallpox; and divulged the hope he entertained of being able finally to eradicate that disease from the face of the globe. Doctor Baron has recorded the remarkable words with which this important communication was made: