HOW SOLVE THE PROBLEM? 169 



and therefore a weak board. The practical effect of 

 such a board is likely to be to obstruct if not to nullify 

 the efforts of the health authorities. Compromises 

 are the result of undue jealousy on the part of agricul- 

 tural and milk industry interests, which cannot in 

 justice oppose legitimate sanitary control under proper 

 legislation. 



LOCAL DIFFERENCES 



Local or regional differences in the intensity of the 

 milk problem are determined by the following general 

 factors: 



1. Degree of urbanization and. of development of 

 milk traffic. 



2. Value of agricultural lands. 



3. Development of efficiency of the dairying in- 

 dustry. 



4. Costs of feeds and other farm material, of farm 

 labor, transportation, handling, and distribution. 



5. Sufficiency or insufficiency of local milk supply. 



6. Sanitary control or its absence. 



7. Adjustment or maladjustment of milk prices. 

 These factors naturally vary greatly according to 



place, and certain of them fluctuate from month to 

 month. A complete survey of the milk situation of a 

 region or city is a matter of much complexity. Men- 

 tion of some such surveys is made in Appendix E. 



To establish sanitary control in any given town or 

 city, extensive preliminary investigation is usually 

 unnecessary. Chief attention is to be paid to the ques- 

 tion of how much laboratory and inspection work is 

 necessary for the given number of supplies, dairy farms, 



