EEGULATION OF PRODUCTION 171 



said that the observance of the conditions that are out- 

 lined above, as well as those that will be mentioned later, 

 can be expected only when the dairy farm is under the 

 inspection of a veterinarian who is entirely independent 

 of the owner. 



Therefore, when it is possible, one should endeavor 

 strongly to arrange for such veterinary supervision. 

 Naturally, it is of some advantage to make inspections 

 now and then, at irregular times, but if the control is to 

 be really effective, the visits must take place frequently, 

 and with some degree of regularity. Preferably, the 

 visits should not be more than fourteen days apart be- 

 cause, in that time, tuberculosis may attain such develop- 

 ment that bacilli may be excreted with the milk, and dis- 

 eases of the udder often develop acutely and follow a 

 short and rapid course, thus making frequent examina- 

 tions necessary. Only in cases in which the milk is sub- 

 jected to a really safe process of pasteurization before it 

 is sold, should a less frequent inspection be considered 

 sufficient. 



[This amount of supervision, a visit to each produc- 

 ing farm every two weeks, is not attainable with relation 

 to the milk supply of the large cities of the United 

 States, nor is it to be regarded, in the present provi- 

 sional state of the sanitary development of the country, 

 as necessary. That producing farms should be under 

 some supervision, all agree. The amount of supervision 

 that is necessary varies with the conditions. If a given 

 herd is known to be infected with tuberculosis and 

 infested with other diseases, if the premises are bad and 

 the owner careless, then frequent inspections should be 

 made until there is decided improvement ; on the other 

 hand, if a certain herd is known to be clear of tuber- 

 culosis, calf cholera, infectious gargets, etc., if the prem- 

 ises are good and well kept and the owner intelligent and 



