FROM THE PRACTICAL VIEWPOINT 



work to study their problems and so secure the 

 best milk possible at the least expense, and with 

 the least amount of waste. Thus the governmen- 

 tal forces and the dealers themselves both work 

 toward the goal of a better milk supply. 



The great importance of the problems which * 

 affect the securing of a safe milk supply has led 

 to the publication of many books, in which the va- 

 rious phases of the matter have been considered. 

 The composition of the milk, its chemical charac- 

 teristics, the number and kind of bacteria con- 

 tained, the forms of adulteration which occur and 

 the methods for detecting such adulteration have 

 all been broadly covered. The relation of milk to 

 the public health and the disease epidemics which 

 have been due to infected milk have received large 

 attention in published works. Much has also been 

 published regarding the most effective methods to 

 be employed in the public control of milk supply. 



While there is an extensive literature concern- 

 ing the problems of milk pasteurization dealing 

 with the matter from the theoretical side, and also 

 covering certain special phases of the work, it is 

 rather surprising to find how little of this is 

 available for the practical use of the milkman who 



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