CONTENTS. 



CHAPTER XX. 



FAGE8 



The hacillm diphtherm — Its isolation and cultivation 

 — Morphological and cultural peculiarities — Pathogenic 

 properties — Variations in virulence ... . 279-294 



CHAPTEE XXI. 



Typhoid fever — The badUus typhi abdominalis, its mor- 

 phological, biological and pathogenic peculiarities — ^The 

 baeterium coli commune — Its resemblance to the bacillus of 

 typhoid fever — ^Its morphological, cultural, and pathogenic 

 properties — Differentiation between the two organisms . 295-312 



CHAPTER XXII, 



The spirillum (comma bacillus) of Asiatic cholera — Its 

 morphological, biological, and pathogenic peculiarities — 

 The bacteriological diagnosis of Asiatic cholera . . 313-339 



CHAPTER XXIII. 



Organisms of interest, historic and otherwise, that have 

 been confounded with the spirillum of Asiatic cholera — 

 Their peculiarities and points of differentiation — Vibrio 

 proleus or bacillus of Finkler and Prior — Spirillum lyroge- 

 num or cheese spirillum of Deneke — Spirillum of Miller — 

 Vibrif) Metchnihom 340-856 



CHAPTER XXIV. 



The bacillus anthracis and its effects upon animals — Its 

 peculiarities under varying conditions of surroundings . 357-369 



CHAPTER XXV. 



The more important of the organisms found in the soil 

 — The nitrifying organisms — The bacillus of tetanus — 

 Bacillus of malignant oedema — Bacillus of symptomatic 

 anthrax . . 370-394 



CHAPTEE XXVI. 

 Infection and immunity — The types of infection, inti- 

 mate nature of the same — Septicaemia — Toxsemia — Vari- 

 ations in infectious processes — Immunity, natural and 

 acquired — The hypotheses that have been advanced in 

 explanation of immunity — Conclusions .... 395-417 



