LIST OF ILLUSTRATIONS 



Colossal bust of Aesculapius in the British Pa <? e 



Museum 5 



Andreas Vesalius 7 



William Harvey 10 



Antonj van Leeuwenhoek 13 



Marcello Malpighi 18 



Edward Jenner 22 



Charles Robert Darwin 27 



Thomas Henry Huxley 30 



Claude Bernard 36 



Ivon Petrovitch Pavloff 42 



Carl Ludwig 47 



Louis Pasteur 50 



Lord Lister 53 



Robert Koch 56 



Elie Metchnikoff 60 



Paul Ehrlich 63 



Jules Bordet 69 



Emil Abderhalden 73 



Bacillus diphtheriae. Twenty-four-hour cul- 

 ture 78 



An aseptic and ready-to-use type of syringe 

 for administering Antitoxins and 



Vaccines 90 



