VI 



ted into each of the animals; 

 the following curves were 

 the above mentioned 



...TV 



like 



so far as a short period 

 without any perceptible 

 change of the agglutinating 

 power was succeeded by 

 a rise, the maximum of 

 which occurred on the 8th 

 -l()th day. 



A great number of simi- 

 lar experiments, made un- 

 der corresponding circum- 

 stances, have given quite 

 analogous results. 



We are here in accor- 

 dance with other investiga- 

 tors, who have found the 

 highest agglutinating power 

 1013 days after the injec- 

 tion of culture. It is for in- 

 stance stated by Deutsch 1 ), 

 that both the preventive 

 and the agglutinating power 

 of guinea-pigs, immunised 

 against B. typhosus, incre- 

 ased from the 4th day after 

 the injection, reached the 

 maximum on the l()th 12th 



1) Ladislas Deutsch: Contribution a 

 1'ctude dc 1'origine des anticorps " 

 typhiques. Annales de 1'Instilut Pa- "!$ 

 stem- 189'J. 



Curve No. 4 



