CONTENTS. 



PART I. 



CHAPTER I. 



THE THEORIES OF IMMUNITY (METCHNIKOFF AND EHRLICH). EXPERI- 

 MENTAL RESEARCHES INSPIRED BY THESE THEORIES. 



Pathogenic Mechanism of Bacterial Infection. Toxic 

 Action. Action of Bacterial Bodies and of the Products 

 of Bacteriolysis when Considered as Heterogeneous 

 Albumins. Properties of the Mixtures of Antigens with 

 Their Antibodies. Ricin. Antiricin. Phenomena of 

 "Surcharge" 17-32 



CHAPTER II. 



PHYSICOCHEMICAL PROPERTIES. TRANSFORMATION OF THE 

 ARSENOBENZENES "!N VITRO" AND IN THE ORGANISM. 



Physicochemical Properties and Constitution. Transforma- 

 tions "In Vitro." Transformations in the Organism 

 Toxicity. Relations between Apparent Toxicity and 

 Formation of Precipitates. Reactions of the Organism. 

 Formation of a Specific Antibody. Experiments on the 

 Fixation and Elimination of Luargol by the Organism . 33-44 



