VI 



The experiments with Vibrio cholerae were undertaken 

 in quite analogous manner, the only exception being that 

 to each tube of culture 0,8 cc. ascites fluid was added. 



ACTIVE IMMUNISATION. 



The object for our first experiments was to examine 

 the oscillations in agglutinating power which occurred 



570 

 IN 



a* 

 37J 

 3M 



tfy & n ** tf t* 



Curve No. 2a 



in the serum of actively immunised animals after a single 

 large injection of a fresh culture of Bacillus typhosus resp. 

 Vibrio cholerae. 



Rabbits and goats were used, which were previously 



10 



