NATURE AND COMPOSITION OF MILK 



Milk, by which term is to be understood the nutri- 

 tive secretion of nursing mammalia, consists of water 

 holding fat in suspension, and nitrogenous, saccharine 



ERRATA 



Page 10, line 3, for ".035 to .050" read "0.35 to 0.50." 

 Page 65, line 10, insert a quotation mark after word "aah. ] 



eration of the epithelial cells lining the ducts of the 

 mammary gland. It occurs in the form of minute 

 globules from .0015 mm. to .005 mm. in diameter, 

 under conditions which prevent spontaneous coales- 

 cence. Films of proteid matter are also abundant. 

 A form of sugar, isomeric with cane-sugar, and called 

 lactose, is present. 



B 9 



