146 



CITY MILK SUPPLY 



TABLE 40. BACTERIAL CONTENT OF MILK FROM FOUR QUARTERS OF Cows (BERGEY) 



(Continued) 



Cow 



19 



20 



Quarter of the udder 



Right fore 

 Left fore 

 Right hind 

 Left hind 



Right fore 

 Left fore 

 Right hind 

 Left hind 



Right fore 

 Left fore 

 Right hind 

 Left hind 



Bacteria per cubic centi- 

 i meter 



14,100 



8,400 

 3,150 

 1,850 



16,300 



575 



1,250 



53,450 



250 



850 



175 



44,300 



The common occurrence of streptococci in milk attracted Bergey's 

 attention and he pointed out that in many instances there was present in 

 one or more quarters of the udder some evidence that the cow had suffered 

 from mammitis. In other cases the udder was uninjured and there was 

 no history of the disease, but he suggested that the attack may have been 

 so mild as to escape notice, or that it may have occurred so long ago as to 

 have been forgotten. 



On account of the danger to be apprehended from contagious mammi- 

 tis, the prompt removal of cows suffering with garget from the herd was 

 advised, and warning was given that these sick cattle should not be milked 

 or otherwise cared for by the attendants of the milking herd. The prac- 

 tice of milking the fore-milk onto the stable floor, Bergey condemned 

 because of the likelihood of its spreading infection. 



Hastings and Hoffman studied the bacterial content of milk from the 

 udders of individual cows. The result of their observations on two that 

 gave high counts and one that gave low ones are presented in Table 41. 



TABLE 41. BACTERIAL COUNT OF THE MILK FROM THE UDDER OF THREE Cows 



(HASTINGS AND HOFFMAN) 



In the case of Brownie and Dorine the high number of bacteria was 

 due largely to the presence of a single kind of organism, a streptococcus 

 similar to, or identical with St. pyogenes. In the case of Merney the bac- 



