THE RELATION OF MICROORGANISMS TO MILK 



373 



ference in the germ content of milk drawn by two men milking in the 

 same barn under identical conditions. 



Difference in Number of Bacteria in Milk Drawn by Men in Same Stable 



Fig. 127. — Colonies developing in agar plate held for ten seconds in position of 

 milk pail after udder was brushed gently with the hand. (Original.) 



The Utensils. — ^If properly cared for, the dairy utensils should 

 not add to the germ content of the milk. Not infrequently, however. 



