540 BIOLOGY FOR BEGINNERS 



erative wounds was to be expected now it would be considered 

 evidence of gross carelessness and very rarely occurs. 



Among other names to be associated with modern advance 

 against disease is that of Paul Ehrlich. He is famous for his study 

 of the blood as related to immunity to certain diseases, and es- 



FIG. 165. Sir Joseph Lister. 1827-1912. From Locy. 



pecially because of his successful method of treating syphilis, 

 which before had been incurable. 



Another scientist who worked along similar lines was the Russian, 

 Metchnikoff, who was the first to discover the functions of the 

 white corpuscles in combating disease germs in the blood. 



Carrell and Flexner are two American scientists who are work- 

 ing at the present time to carry the fight against disease to a more 



