Photo: Alinari. 



DR. JENNER (1749-1823) INOCULATING HIS OWN SON: THE STATt'E BY J. MONTEVERDE AT . 

 He proved about 1796 by a long series of observations and experiments that vaccination with cowpox protects the body fro* 

 smallpox, either completely or to the extent of diminishing the severity of an aUack. 



