CHAPTER XXI. 



THE MILK OF MAMMALS OTHER THAN THE COW. 



Classification. Broadly speaking, the milk of all mammals may 

 be divided into classes as under : 



(1) Milks forming hard curds with rennet. This class includes 

 the milk of the ewe, buffalo, goat, and cow. 



(2) Milks forming a very soft, or no, curd with rennet. In- 

 cluded in this class are human milk, and those of the ass, mare, 

 and mule. 



The composition of milk of all mammals, on the whole, re- 

 sembles that of cow's milk i.e., they all contain fat in the form 

 of globules, sugar, proteins, and mineral matter. Marked 

 differences, however, occur in the composition of these bodies. 



Comparison of the Pat of Different Animals. (a) Size 

 of Globules. The following table (LXXIII.) gives the results 

 obtained by Pizzi : 



TABLE LXXIII. SIZE OF FAT GLOBULES IN MAMMALIAN MILKS. 



* The milk of the rabbit and mouse contained globules up to 0-0181 mm. in diameter. 



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