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CHAP. 



days later, distinct agglutinin present ; further, that this 

 became enhanced by a similar third injection, and was still 

 more distinct after a fourth injection with living culture. 



6. One half- grown rabbit, No. 2, was injected into 

 the ear vein in precisely the same manner and at the 

 same time as the rabbit of the previous experiment. A 

 fortnight after the third injection with sterile culture 

 (first injection May 6, second injection May 28, third 

 injection June 13), i.e. June 27, the animal's blood 

 serum was tested (dilution 1 : 20) and was found to pro- 

 duce complete agglutination in ten minutes ; the same 

 result as was observed in the previous experiment. The 

 animal, unfortunately, was found dead on July 8. The 

 post-mortem examination showed extensive cysticercus 

 disease of the omentum. 



7. A half -grown rabbit, No. 3, was injected sub- 

 cutaneously with Haffkine's prophylactic at the following 

 times : — 



No. 



1st 



2nd 



3rd 



4th 



5th 



6th 



7th 



8th 



Date of 

 Injection. 



June 17 . 

 July 3 . 

 „ 18 . 

 August 1 



„ 29 

 September 17 

 October 21 

 November 21 . 



Method of 

 Injection. 



Subcutaneous 



Material (and Amount) Injected. 



10 cc. of Haffkine's prophylactic. 



10 



10 



10 



10 



10 



20 



20 



