vin CONTENTS. 



PAGE 



Functions of the side-chains 20 



Receptors 22 



Weigert's overproduction theory 22 



Extension of the theory to the production of other 



anti-bodies 26 



NORMAL SERUM 29 



Its haemolytic and bacteriolytic action 29 



Active and inactive normal serum 30 



Inter-bodies and complements 31 



Action not entirely specific 32 



Multiplicity of the active substances 33 



Hsemagglutinins of normal serum 34 



Nature of the agglutinins 36 



Agglutinoids 37 



Purpose of agglutination 37 



DIFFERENCE BETWEEN A NORMAL SERUM AND A SPE- 

 CIFIC IMMUNE SERUM 38 



Practical application 38 



IMMUNE BODY: ITS NATURE 41 



Made up of partial immune bodies, according to 



Ehrlich 41 



MetchnikofTs views 43 



Where immune body is formed 45 



ANTI-HJEMOLYSINS : THEIR NATURE 45 



Anti-immune body 45 



Anti-complement 47 



Auto-anticomplernent 49 



FLUCTUATIONS IN THE AMOUNT OF THE ACTIVE SUB- 

 STANCES IN SERUM 51 



COMPLEMENTS 53 



Their origin 53 



Structure of the complements 54 



Complementoids 54 



ISOLYSINS, AUTOLYSINS, AND ANTILYSINS 55 



