VI 



A fraction of the blood, transfused into another ani- 

 mal, prevents "agglutinin curve", while a such one arises 

 in the producing animal, containing much more agglu- 

 tinin. 



This is a new proof of the fundamental difference 

 between an actively and passively immunised organism. 



9) The above mentioned results will apply to both 

 typhoid and cholera agglutinin. 



40 



