xiv CONTENTS. 



CHAPTER XVI. 

 DIPHTHERIA. 



PAGE 



Historical General facts Bacillus diphtheriae Microscopical characters 

 Distribution Cultivation Inoculation experiments The toxins of 

 diphtheria Variations in virulence of bacilli Summary of pathogenic 

 action Methods of diagnosis . 356 



CHAPTER XVII. 



TETANUS. 



Introductory Historical Bacillus tetani Isolation of tetanus bacillus 

 Characters of cultures Conditions of growth Pathogenic effects 

 Experimental inoculation Tetanus toxins Antitetanic serum Methods 

 of examination Malignant oedema Characters of bacillus Methods 

 of diagnosis Bacillus botulinus Quarter-evil Bacillus aerogenes 

 capsulatus Cultural characters . . . . . . . . 376 



CHAPTER XVIII. 

 CHOLERA. 



Introductory The cholera spirillum Distribution of the spirilla Cultivation 



Powers of resistance Experimental inoculation Toxins of cholera 

 spirillum Inoculation of human subject Immunity Modes of dis- 

 tinguishing the spirillum General summary Spirilla resembling the 

 cholera organism Methods of diagnosis Metchnikoff 's spirillum 

 Finkler and Prior's spirillum Deneke's spirillum 407 



CHAPTER XIX. 



INFLUENZA, PLAGUE, RELAPSING FEVER, MALTA FEVER, 

 YELLOW FEVER. 



Influenza bacillus Microscopical characters Cultivation Distribution 

 Experimental inoculation Methods of examination Bacillus of plague 



Microscopical characters Cultivation Anatomical changes produced 

 and distribution of bacilli Experimental inoculation Paths and mode 

 of infection Immunity Relapsing fever Characters of the spirillum 



Relations to the disease Malta fever Micrococcus melitensis 

 Relations to the disease Methods of diagnosis Yellow fever Bacteria 



in yellow fever The mosquito theory of infection 430 



CHAPTER XX. 

 IMMUNITY. 



Introductory Acquired immunity Artificial immunity Varieties Active 

 immunity Methods of production Attenuation and exaltation of viru- 

 lence Passive immunity Action of the serum Antitoxic serum 

 Standardising of toxins and of anti-sera Nature of antitoxic action 



