viii AGGLUTINATION OF B. PESTIS 



As to rabbit No. 6 : — 



225 



No. 



Date of 

 Injection. 



Method of 

 Injection. 



Material (and Amount) Injected. 



1st 



2nd 



3rd 



4th 



5 th 



6th 



7th 



8th 



July 1 . 

 „ 11 • 

 „ 18 . 

 1. 



„ 29 

 September 17 

 October 21 

 November 21 



Intravenous . 



Subcutaneous 



5 cc. of Haff kine's prophylactic. 



5 55 55 



10 „ 



10 „ 



10 „ 



10 „ 



18 „ 



20 „ 



The blood serum of this animal was tested (dilution 

 1 : 20) :— 



This experiment is confirmatory of that with the 

 previous animal, No. 5. A twofold intravenous injection 

 of HafTkine's prophylactic brought about production of 

 agglutinins. But at this stage a single subcutaneous 

 injection of 10 cc. not only did not enhance the aggluti- 



Q 



