202 



THE MILK QUESTION 



TABLE SHOWING THE THERMAL DEATH-POINT OF THE 

 TUBERCLE BACILLUS AS FOUND BY VARIOUS INVESTIGATORS 



The typhoid bacillus. 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 bacillus succumbs at comparatively low 

 temperatures. Oftentimes it fails to grow after heating to 



