xii CONTENTS. 



CHAPTER VII. 



Special Features of Infection : 



1. Virulence, Toxicity, Etc 88- 94 



2. Types of Infection 94-102 



3. Nature and Mechanism of Infection.. ..102-127 



PART TWO. 



CHAPTER VIII. 

 Types of Immunity 128-13C 



CHAPTER IX. 



Natural Immunity 137 



1. Protection Afforded by the Body Surfaces. . 137-143 



2. Internal Protective Agencies: 



A. Inflammation 143-149 



B. Properties of the Serum and Plasma. .149-160 



CHAPTER X. 

 Acquired Immunity 161-175 



CHAPTER XI. 

 Toxins and Antitoxins 176-190 



CHAPTER XII. 

 The "Structure" of Toxins and Antitoxins and 



the Nature of the Toxin-Anti-Toxin Reaction. .191-205 



CHAPTER XIII. 

 The Phenomenon of Agglutination 206-218 



CHAPTER XIV. 

 The Nature of the Substances Concerned in 



Agglutination 219-233 



CHAPTER XV. 

 Precipitins 234-244 



CHAPTER XVI. 



A. General Properties of Bactericidal Serums. . .245-25(i 



B. Hemolysins 256-278 



