vni CONTENTS 



CHAPTER VI 



THE BACTERICIDAL SUBSTANCES OF THE BLOOD 



The Alexins 69 



Pfeiffer's Experiment 71 



The Leukins 79 



Offensive-defensive Mechanism in Infections with Necroparasites ... 80 



Offensive-defensive Mechanism in Infections with True Parasites . . . 81 



Offensive-defensive Mechanism in Infections with Semiparasites ... 85 



CHAPTER VII 

 ANTIGENS AND ANTIBODIES 



Allergia 91 



Antitoxins 92 



Bacteriolysins 94 



Agglutinins 95 



Precipitins 96 



Cytolysins 97 



Isocytolysins 100 



Auto-antibodies 100 



Immune Opsonins and Bacteriotropins 101 



Antiferments 102 



Antilipoids ' 103 



Albuminolysins 103 



Anaphylaxis 104 



CHAPTER VIII 



THE SIDE-CHAIN THEORY 



Formation of Antibodies 114 



CHAPTER IX 

 THE DIFFERENT TYPES OF IMMUNITY 



Natural Immunity 127 



Acquired Immunity 131 



Antitoxic Immunity 132 



Athreptic Immunity 134 



Antiaggressin Immunity 135 



Antibacterial Immunity 137 



CHAPTER X 

 ANAPHYLAXIS 



Richet's Studies 146 



The Phenomenon of Arthus . 147 



