ACTION OF COLD. 



397 



Association to induce them to offer a gold medal for the discovery 

 of such a method. 



TABLE CXXXIII. COMPOSITION OF STERILISED MILK. 



Sterlised Milk allowed to stand for Six Hours. 



TABLE CXXXIV. COMPOSITION OF NEW MILK. 



New Milk allowed to stand for Six Hours. 



The Action of Cold on Milk Composition. When milk 

 is exposed to a low temperature it freezes partially. Like other 

 aqueous solutions the freezing point is below that of water, and 

 is about 0-55 C. (31 F.), estimated in the Beckmann apparatus. 

 The frozen portion has not the same composition as the milk 

 from which it was prepared, but contains a larger quantity of 

 water. Owing to the facts that milk has not a point of maximum 

 density, and that it does not freeze as a homogeneous substance. 



