Page:An Inquiry into the Causes and Effects of the Variolæ Vaccinæ - 1798.djvu/46

 this young woman, but was taken from that of another, and is annexed for the purpose of representing the malady after it has newly appeared.

THE more accurately to observe the progress of the infection, I selected a healthy boy, about eight years old, for the purpose of inoculation for the Cow Pox. The matter was taken from a sore on the hand of a dairymaid, who was infected by her master's cows, and it was inserted, on the 14th of May, 1796, into the arm of the boy by means of two superficial incisions, barely penetrating the cutis, each about half an inch long. On