SOURCES OF COMMON MILK BACTERIA 



FIG. 31 FILTHY CONDITION OF COW'S HINDQUARTERS TOO FREQUENT 

 ON DAIRY FARMS 



the amount of filth attached thus to the animal is surprisingly 

 great. All of this filth is laden with bacteria in large numbers. 

 (Figs. 31 and 32.) It is impossible for the cow to move with- 

 out more or less of it falling from her body, and during the 

 whole process of the milking, by the movements of the flanks, 



