CHAPTER XII. 
CONTROL OF THE MILK-SUPPLY. 
A better regulation of the milk-supply is emphatically needed, and 
this need has become more and more evident as the facts enumerated 
in the last chapter have been gradually disclosed. It would enable 
the dairyman to avoid the many troubles due to undesirable organ- 
isms and would be to the public at large a means of protection 
from the illnesses due to milk. In consequence of this- need, a 
series of regulations and suggestions have arisen looking toward 
the improvement in the quality of milk We may best consider 
these under three heads: i. Dairy problems. 2. Transportation 
problems. 3. Public control. 
I. DAIRY PROBLEMS. 
Manifestly the first place demanding attention in the attempt 
to reduce the possible evils resulting from undue bacterial contamina- 
tion is the dairy. The primary lesson to be learned here is ihe 
need of cleanliness. But there are several subordinate divisions 
of this general subject. 
The Cow. The health of the cow is a matter of such great 
importance that it hardly needs to be said that no sickly cow should 
be allowed to contribute to the milk-supply. All tuberculous cows, 
in particular, should be excluded, or their milk used only after 
pasteurization. Every dairyman should be on the watch for udder 
troubles, and if any signs of hardness, of inflammation, or of running 
sores appear on the udders, or if the animal gives bloody milk, 
she should at once be excluded from the milk-producing herd until 
completely recovered. The cow should also be kept clean. For- 
tunately, there has been a decided change in this respect, and at 
the present time cattle in dairies are not infrequently groomed and 
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