xii CONTENTS. 



CHAPTEE XXII. 



PAGE 



The spirillum (comma bacillus) of Asiatic cholera— Its morphologi- 

 cal and cultural peculiarities— Pathogenic properties— The bacterio- 

 logical diagnosis of Asiatic cholera ... • 365-393 



CHAPTEE XXIII. 



Organisms of interest, historically and otherwise, that have been 

 confounded with the spirillum of Asiatic cholera — Their peculiari- 

 ties and differential features — Vibrio proteus, or bacillus of Finkler 

 and Prior — Spirillum iyrogenuvi, or cheese spirillum of Deneke — The 

 spirillum of Miller — Vibrio Melehnikovi . ... 394-411 



CHAPTEE XXIV. 



study of bacillus anthrads, and the effects produced by its in- 

 oculation into animals— Peculiarities of the organism under varying 

 conditions of surroundings ..... 412-427 



CHAPTER XXV. 



The most important of the organisms found in the soil — The nitri- 

 fying bacteria— The bacillus of tetanus— The bacillus of malignant 

 oedema — The bacillus of symptomatic anthrax . . . 428-452 



CHAPTEE XXVr. 



Infection and immunity— The types of infection ; Intimate nature 

 of infection— Septicaemia, toxsemia, variations in infectious pro- 

 cesses—Immunity, natural and acquired — The hypotheses that have 

 been advanced in explanation of immunity— Conclusions . . 453-483 



CHAPTEE XXVII. 



Bacteriological study of water— Methods employed— Precautions 

 to be observed— Apparatus used, and methods of using them— 

 Methods of investigating air and soil . . . 484-511 



CHAPTEE XXVIII. 



Methods of testing disinfectants and antiseptics— Experiments 

 illustrating the precautions to be taken — Experiments in skin-dis- 

 infection . . . .... 512-525 



APPENDIX. 

 Apparatus necessary in a beginner's bacteriological laboratory . 527-532 



