CONTENTS. 



(CHAPTEB PAGB 



I. CONTRIBUTIONS TO THE THEORY OF 



LYSIN ACTION Ehrlich and Morgenroth. 1 



II. CONCERNING H^MOLYSINS. (Second 



Communication.) Ehrlich and Morgenroth. 11 



III. STUDIES ON H^MOLYSINS. (Third 



Communication.) Ehrlich and Morgenroth. 23 



IV. CONTRIBUTIONS TO THE STUD OF 



IMMUNITY von Dungem. 36 



New Experiments on the Side- 

 chain Theory. Phagocytosis and 

 Glohulicidal Immuity. 

 V. CONTRIBUTIONS TO THE STUDY OF 



IMMUNITY von Dungern. 47 



Receptors and the Formation of 



Antibodies. Milk Immune Serum. 



VI. STUDIES ON H^MOLYSINS. (Fourth 



Communication.) Ehrlich and Morgenroth. 56 



VII. STUDIES ON H^EMOLYSINS. (Fifth 



Communication.) Ehrlich and Morgenroth. 71 



VIII. STUDIES ON HJSMOLYSINS. (Sixth 



Communication.) Ehrlich and Morgenroth. 88 



IX. CONCERNING THE MODE OF ACTION 



OF BACTERICIDAL SERA M. Neisser. 120 



X. THE DEFLECTION OF COMPLEMENTS 

 IN BACTERICIDAL TEST-TUBE EX- 

 PERIMENTS Lipstein. 132 



XI. ACTIVE IMMUNITY AND OVERNEU- 



TRALIZED DIPHTHERIA TOXINS Rehns. 143 



XII. Is IT POSSIBLE BY INJECTING AG- 

 GLUTINATED TYPHOID BACILLI TO 

 CAUSE THE PRODUCTION OF AN 



AGGLUTININ? M. Neisser. 146 



XIII. IMMUNIZING EXPERIMENTS WITH 

 ERYTHROCYTES LADEN win IM- 

 MUNE BODY Sachs. 158 



ix 



