CONTENTS xiii 



reactions Pathological changes in typhoid fever 

 Immunisation of animals Etiological relationships of bacillus 

 typhosus Epidemiology of typhoid fever Typhoid carriers 

 Serum diagnosis of typhoid fever Vaccination against 

 typhoid Methods of examination Paratyphoid and food- 

 poisoning bacilli The paratyphoid bacillus Bacillus enteri- 

 tidis (Gaertner) The psittacosis bacillus Danysz's bacillus 

 and rat viruses Bacillus dysenterise Bacillus enteritidis 

 sporogenes Summer diarrhoea General review of coli-typhoid 

 group ........ 350 



CHAPTER XVI. 

 DIPHTHERIA. 



Historical General facts Bacillus diphtherire Microscopical 

 characters Distribution Association with other organisms 

 Cultivation Powers of resistance Inoculation experiments 

 The toxins of diphtheria Variations in virulence of bacilli 

 Bacilli allied to the diphtheria bacillus Summary of patho- 

 genic action Methods of diagnosis .... 396 



CHAPTER XVII. 



TETANUS. 



Introductory Historical Bacillus tetani Isolation of bacillus 

 tetani Characters of cultures Conditions of growth Patho- 

 genic effects Experimental inoculation Tetanus toxins 

 Antitetanic serum Methods of examination Malignant 

 ( edema Characters of bacillus Experimental inoculation 

 Methods of diagnosis Bacillus botulinus Quarter-evil 

 Bacillus aerogenes capsulatus Fusiform anaerobic bacilli . 415 



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 Methods of diagnosis General summary 

 Other spirilla resembling the cholera organism Metchnikoflf's 

 spirillum Finkler and Prior's spirillum Deneke's spirillum 446 



