104 



COLLECTED STUDIES IN IMMUNITY. 



TABLE Via. 



In this combination the anti-immune body exerts no action. Hence 

 we must here be dealing with a particular type of immune body which 

 effects a combination with a complement present in goat serum. This 

 immune body enters into no relation with the complex of immune 

 bodies here present; it must therefore possess a haptophore group 

 which finds no fitting counter group therein. 



As a matter of fact the completion by means of goat serum occu- 

 pies a special position, for the quantitative relations of the immune 

 body are entirely different from those observed when guinea-pig 

 serum is used. In order to effect complete solution when goat serum 

 is used as complement, it is necessary, as a rule, to use from ten to 

 thirty times the amount of immune body that would be required 

 if guinea-pig serum were used as complement. This is well shown 

 by Table VII. 



TABLE VII. 



That this behavior is not due to a smaller content of complement 

 in the goat serum can readily be determined by suitable experiments 

 especially by increasing the dose of the latter. 



