166 THE MODERN MILK PROBLEM 



a special dairy department has been created for a similar 

 purpose. 5 



The development of extension work by state agricul- 

 tural authorities is of the greatest importance. It is not 

 sufficient to publish scientific bulletins; the most ef- 

 fective service requires that agricultural experts ad- 

 visers or demonstrators go regularly to the farmer and 

 assist him with his problems. In preceding paragraphs 

 we have seen how important is this practical advice as 

 distinguished from mere inspection and how it is a nec- 

 essary complement of milk regulation 



LOCAL SUPERVISION 



Granted that efficient public health service and a 

 system of grading have been established, the most im- 

 portant single means of local supervision is the labora- 

 tory. The apparatus for performing even as many as 

 100 to 200 bacteria tests daily can be installed at a 

 small expenditure ($200 to $500) . 6 (The apparatus for 

 ordinary chemical tests is also, inexpensive.) Under ex- 

 pert supervision, tests may be made by a careful worker 

 (young man or woman) at a very moderate salary. 



The effort should be made to examine each supply 

 for total count at least once a week, especially during 

 the warmer months, and to make any special examina- 

 tions that may be necessary.* Chemical tests may 

 be made less frequently, unless milks are labelled for 

 fat content. Other laboratory tests, e. g., for dirt, may 

 also be practiced. 



The amount of attention devoted to "milk supply by 



* Cf . resolution of Commission on Milk Standards relative to tests 

 for grading, Appendix B. 



