IX 



PEOTECTIVE INOCULATION 



251 



32 to 36 cc.) without a single failure. All of them 

 showed, when kept in an upright position, a perfectly 

 clear fluid with the granular and floccular sediment. 

 Accidental and extraneous contamination did not occur. 



Constitutional Changes in Animals injected with 

 Plague Prophylactic 



In order to supply means of comparing the effects of injections 

 of the plague prophylactic, I submit here a tabular account of the 

 changes of the temperature and of body weight of rabbits sub- 

 mitted to injection of, at first sterile, afterwards living (solid) culture 

 of B. pestis. 



Babbit No. 1 

 First subcutaneous injection, May 6, with sterile culture :- 



