10 



opalescent suspension. The protein antigen was used 

 without further dilution, as was also the control B. coli 

 a'ntigen. The course of the immunation is given in the 

 following proctocals: 



Table #1. Rabbit injected with fat antigen. 



Table #2. .Rabbit injected with protein antigen 



This animal was the third to be used for protein 

 injections; the other two died immediately after the 

 initial injection, thus demonstrating the possibility of 

 a toxic fraction present in the protein mass. 



Table 



Rabbit injected with B. coli antigen 



The injections were all given by the intravenous 

 method, using the prominent veins in the ears as the 

 sites of injection. 



