x CONTENTS 



PART III 

 ON THE ANTI-BACTERIAL PROPERTIES OP SERUM 



PAGE 



I. Opsonic Action 159 



(a) On the Combining Properties of Opsonins of Normal Serum . 159 



(1) Absorption by Sensitized Red Corpuscles ; Comparison 

 of the Effects on Haemolytic, Opsonic, and Bactericidal 

 Action 162 



(2) Absorption by Serum Precipitate . . . .165 



(3) Absorption by Emulsions of Heterologous Bacteria, 

 treated with Immune-body and also untreated . . 166 



General Results 170 



(6) On the Combining Properties of the Opsonin of an Immune 



Serum 172 



(1) A Comparison of the Effects of Complement Absorbers 



on Normal and Immune Opsonins .... 175 



(2) On the Relative Specificity of Normal and Immune 

 Opsonins 178 



(3) The Relations of the Opsonin of an Immune-serum to 

 other Anti-substances . . . . . .182 



Conclusions .......... 184 



Addendum .......... 186 



II. The Bactericidal Action of Normal Serum . . 192 



Methods 195 



Removal of Bactericidal Action by Homologous Bacteria . .196 

 Removal of Bactericidal Action by Heterologous Bacteria . . 199 

 Reactivation of Partially Exhausted Serum .... 204 

 Conclusions . . .211 



Addendum On Complements in General 212 



