Dr. SKEY, physician to the Worcester Hospital, testified that in the spring of 1801 smallpox was epidemic in Worcester. He inoculated a number of children with cowpox, and none of them took smallpox although constantly exposed to contagion. Dr. THORNTON, physician to the Marylebone Dispensary, had inoculated a patient with cowpox, and afterwards with smallpox at twelve different times during the past three years without effect. He had even slept with a person in natural smallpox, who died, but took no harm. When at Lord Lonsdale’s in the North he had operated on upwards of a thousand, and had completely satisfied himself, and all the medical practitioners in that part of England, that cowpox was a mild disease, hardly deserving the name of a disease. It was not contagious; it never disfigured the person, never produced blindness, nor excited other diseases. It was equally safe whether during the period of pregnancy, or the earliest infancy, or extreme old age. Dr. BAILLIE then gave his influential judgment. He thought cowpox an extremely mild disease, and when a patient had properly undergone it, he was perfectly secure from the future infection of smallpox: and further, if Dr. Jenner had not chosen openly and honourably to explain to the public all he knew upon the subject, he might have acquired a considerable fortune. In his opinion it was the most important discovery ever made in medicine. Mr. DAVID TAYLOR, surgeon of Wootton-under-Edge, had inoculated about two thousand persons with cowpox without a single failure, nor had he met with any ulcerations, tumours, or other diseases following the operation. He knew Jenner’s practice in Gloucestershire. It was in a very populous neighbourhood where there was not another physician within sixteen miles. He had surrendered an income of £600 a year to devote himself to the public service. As a final specimen of this medical evidence I may cite Mr. JOHN RING, the petitioner’s henchman. He considered Jenner the author of Vaccine Inoculation, a discovery the most valuable and important ever made by man. It was a perfect and permanent security against smallpox. He had himself inoculated about 1200, of whom a thousand had exposed themselves to smallpox infection with impunity. There was no danger whatever from the New Inoculation unless from ignorance and neglect. One in every hundred inoculated with smallpox in London died, owing to the unwholesome atmosphere and the necessity of operating on children at an improper age. If Jenner had kept his discovery to himself he might have made £10,000 a year by it; for others had got as much or more by the practice of physic.