CONTENTS. 



CHAPTEE I. 



The Etiology of the Bacterial Diseases : Bacterial, Protozoal, Para- 

 sitic, Toxic, Traumatic, and Autogenous Diseases. How Bac- 

 teria cause Disease 17 



CHAPTEE II. 



Classification and Definition of the Chemical Products of Bacteria : 

 Ptomains ; Bacterial Proteids ; Bacterial Cellular Proteids ; 

 Toxins 29 



CHAPTEE III. 



A Historical Sketch of the Bacterial Poisons : Observations on Putre- 

 factive Material ; Examination of Mixed Cultures ; The Study of 

 Pure Cultures 38 



CHAPTEE IV. 

 The Bacterial Poisons of some of the Infectious Diseases ; Anthrax ; 

 Asiatic Cholera ; Tetanus ; Diphtheria ; Tuberculosis ; Suppura- 

 tion ; Gonorrhoea ; the Summer Diarrhoeas of Infancy ; Typhoid 

 Fever ; Hog Cholera ; Babbit Septicaemia ; Pneumonia ; Malig- 

 nant (Edema; Puerperal Fever; Glanders 48 



CHAPTEE V. 



The Germicidal Properties of Blood Serum ; Alexins ; Nuclein 102 



CHAPTEE VI. 



The Specific Precipitins 113 



CHAPTEE VII. 



The Lysins : Bacteriolysis ; Hemolysis ; Cytolysis ; Epitheliolysis ; 

 Nephrolysis; Spermotolysis 122 



CHAPTEE VIII. 



The Agglutinins 152 



CHAPTEE IX. 



Immunity : Natural Immunity ; Natural Immunity to Bacteria ; 

 Natural Immunity to Toxins ; Acquired Immunity ; Acquired 

 Bacterial Immunity ; Acquired Immunity to Toxins ; Antitoxins.. 162 



vii 



