CONTENTS ix 

 CHAPTER VIII. 



THE PATHOGENIC FLAGELLATES (CONTINUED). 



The Genus Trypanosoma 244 



The Motile Apparatus of Trj'panosoma 253 



The Trypanosome Nuclei 255 



Form Changes of Trypanosomes 257 



Reproduction of Trj^panosomes 260 



Agglomeration 261 



Invertebrate Hosts and Life Cycle 261 



The Effects of Trypanosomes upon Vertebrate Hosts 267 



CHAPTER IX. 



THE PATHOGENIC HEMOSPORIDIA. 



The Genus Babesia 270 



Structural Characteristics 273 



Transmission by Ticks and Life Cycle of Babesia 275 



The Organisms of Malaria 279 



CHAPTER X. 



THE PATHOGENIC RHIZOPODA. 



Entameba and the Dysentery Problem 294 



Rabies and the Negri Bodies 300 



Smallpox and the Guarnieri Bodies 302 



Other Protozoan Diseases of Obscure Etiolog\- 311 



