FROM THE PRACTICAL VIEWPOINT 



the evidence of his uncleanliness has been strained 

 out. It seems wise to advise dealers to prohibit 

 the straining of milk at the farm. This may 

 seem like radical doctrine, but a little thought dis- 

 closes its wisdom. If the milk is unstrained, then 

 the sediment test becomes of real value to the 

 dealer in directing his attention to those dairymen 

 who need attention from the inspector. Then, 

 again, after the dirt once gains access to the milk, 

 the straining simply removes that part of the dirt 

 which is the least objectionable, namely, the in- 

 soluable part. If milk is poured over a strainer, 

 the dirt remains upon the surface, and the milk 

 which may be afterward poured through the 

 strainer helps to carry through those soluble por- 

 tions which may have at first escaped solution. 

 This soluble portion, of course, contains most of 

 the bacteria. 



The removal of the dirt at the shipping sta- 

 tion or the pasteurizing plant may be accom- 

 plished by straining as it is received, or since the 

 straining of cold milk is difficult, it may be strained 

 while hot from the heater and before it enters the 

 holding apparatus. There is no objection to this, 

 since whatever bacteria are carried through into 

 151 



