Page:An Inquiry into the Causes and Effects of the Variolæ Vaccinæ - 1798.djvu/52

 JOHN BAKER, a child of five years old, was inoculated March 16, 1798, with matter taken from a pustule on the hand of Thomas Virgoe, one of the servants who had been infected from the mare's heels. He became ill on the 6th day with symptoms similar to those excited by Cow-pox matter. On the 8th day he was free from indisposition.

There was some variation in the appearance of the pustule on the arm. Although it somewhat resembled a Small-pox pustule, yet its similitude was not so conspicuous as when excited by matter from the nipple of the cow, or when the matter has passed from thence through the medium of the human subject.—(See Plate, No. 2.)

This experiment was made to ascertain the progress and subsequent effects of the disease when thus propagated.