202 



THE MILK QUESTION 



TABLE SHOWING THE THERMAL DEATH-POINT OF THE 

 TUBERCLE BACILLUS AS FOUND BY VARIOUS INVESTIGATORS 



The typhoid hadllus. The evidence is plain that milk 

 heated to 60° C. and maintained at that temperature for 

 two minutes will kill the typhoid bacillus. The great ma- 

 jority of these organisms are killed by the time the tem- 

 perature reaches 59° C, and few survive to 60° C. 



The diphtheria bacillics succumbs at comparatively low 

 temperatures. Oftentimes it fails to grow after heating to 



