VI CONTENTS 



PAGE 



NATURE OF THE AGGLUTININS 35 



NATURE OF THE AGGLUTINATION REACTION 36 



AGGLUTINOIDS 38 



GROUP AGGLUTININS 39 



ABSORPTION METHODS FOR DIFFERENTIATING BETWEEN 



A MIXED AND A SINGLE INFECTION 41 



FORMATION OF AGGLUTININS ACCORDING TO THE SIDE- 

 CHAIN THEORY, RECEPTORS OF FIRST, SECOND, AND 



THIRD ORDER 43 



Bacteriolysins and Hsemolysins 47 



HISTORICAL 47 



PFEIFFER'S PHENOMENON 48 



HAEMOLYSIS 49 



NATURE OF H^EMOLYTIC SERA 51 



THE EXCITING AGENT 54 



RESUME 54 



ANALOGY BETWEEN THE BACTERIOLYTIC AND H.EMO- 



LYTIC PROCESSES 54 



EHRLICH AND MORGENROTH ON THE NATURE OF HAEMO- 

 LYSIS 56 



THEIR THREE CLASSIC EXPERIMENTS 57 



NOMENCLATURE 60 



ROLE OF THE IMMUNE BODY 62 



ON WHAT THE SPECIFICITY DEPENDS 63 



DIFFERENCE BETWEEN A SPECIFIC SERUM AND A NOR- 

 MAL ONE. 64 



DIVERGING VIEWS OF EHRLICH AND BORDET .... 64 



THE SIDE-CHAIN THEORY APPLIED TO THESE BODIES. 65 



MULTIPLICITY OF COMPLEMENTS 67 



THE BORDET-GENGQU PHENOMENON ; NEISSER- 



SACHS BLOOD TEST 68 



NORMAL SERUM, ITS. H^MOLYTIC AND BACTERIOLYTIC 



ACTION 70 



ACTIVE AND INACTIVE NORMAL SERUM 72 



