IMMUNIZATION WITH BACTERIOPHAGE SUSPENSIONS 



523 



following the injection by the inoculation of virulent culture, repre- 

 senting, according to the weight of the animal, from 5 to 1000 surely- 

 fatal doses. All died. 



B. Twelve steers and one buffalo were tested between the 13th and 

 20th days, all by the inoculation of 1000 surely fatal doses of barbone 



culture. Five resisted, the others succumbed. The experiment is 

 given in detail in table 63. 



Two control steers died in 22 and 26 hours after the inoculation, 

 and one buffalo, as control, died in 19 hours. 



C. Twenty animals; 5 steers, 3 young buffaloes, and 12 adult buf- 

 faloes were tested during the period from the twenty-first to the six- 

 tieth day after the immunizing injection. All received 1000 surely 



