246 MILK HYGIENE 



the water supply is to be reported at once to the committee on 

 control. 



F. OTHER PROVISIONS 



1. The producer agrees to answer truthfully and honestly 

 all questions from the company in regard to the milk supply. 



2. It is agreed that the herds and premises where the milk 

 is handled and cared for shall be open at all times to the mem- 

 bers of the committee on control. 



IV. INSTRUCTIONS TO THE VETERINARIANS 



The veterinarians are appointed and can only be dismissed 

 by the committee on control, and all instructions come from 

 this committee. 



A report is to be rendered to the committee on every visit 

 to a herd, and this shall contain information in regard to: 

 the total number of cows, the cows in milk, all cases of disease, 

 whether cows have been sold or killed that were isolated as 

 suspicious or diseased, the condition of the whole establish- 

 ment in respect to cleanliness, the method of feeding and re- 

 marks on any pertinent subject. 



[It is especially to be noted, in respect to the above regula- 

 tions, that they are planned not for the purpose of measuring, 

 by means of a laboratory examination, the extent to which milk 

 has become contaminated, but for the purpose of preventing 

 contamination. 



The most injurious bacteria in milk are the pathogenic 

 forms that come from diseased persons or cattle and the putre- 

 factive organisms that come from diseased cows, dirty prem- 

 ises or utensils or faulty methods of milking or handling milk. 

 The most important pathogenic forms cannot be detected in 

 milk by the usual routine methods in use in milk laboratories, 

 if at all. And if these organisms are detected by laboratory 

 examination it is not until long after the milk has been con- 

 sumed. Nor can the injurious saprophytes be identified in 

 the laboratory until too late to prevent the use of milk con- 



