THE DAIRY. 79 



disposed of as may be required for either butter- or cheese- 

 making. 



While the air is seldom impure enough to vitiate milk that is 

 10 degrees warmer, it is seldom pure enough not to do harm 

 when the milk is 10 degrees colder. Milk that has been cooled 



FIG. 15. THE " SANDRINGHAM" DAIRY RECORDER. 



by water or ice should not be exposed to an atmosphere that is 

 10 or 20 degrees warmer, for it is then a facile condenser and 

 absorbent. Better cover it over then, to keep the air from it, 

 and also when it is quietly falling to the temperature of the room 

 without having gone through any other process of cooling. The 



