Care and Management of Dairy Cattle 159 
A good plan is to set the cans in a vat containing ice, and cover 
the vat with a lid. If this is not convenient, set the cans in run- 
ning well or spring water. During transportation, cover the cans 
Fic. 64.— Cooling milk. Milk cooled immediately after drawing will keep swect 
much longer than otherwise. 
with a blanket. In summer the blanket should be wet, in winter 
dry. 
264. Milking machines. — Perhaps the most important factor 
retarding the development of dairying is the difficulty of securing 
milkers who can be depended on to do their work satisfactorily. 
In general the size of the dairy is restricted to the number of cows 
