CONTENTS. 



PAGE 



INTRODUCTION 9 



MILK AND ITS COMPOSITION 12 



The milk glands and milk secretion ; the constituents 

 of milk; the composition of milk of different species of 

 animals; variations in the composition of cow's milk; 

 changes in secretion during diseases of the udder; excretion 

 of foreign matter with milk; changes in milk caused by 

 micro-organisms; changes in milk at high temperatures. 



HARMFUL. PROPERTIES WHICH MILK MAY POSSESS 60 



Excretion of poisonous substances with milk; addition 

 of preservatives; absorption of odors; transmission of 

 infection from cattle to man; contamination with organisms 

 of specific diseases of man; contamination with other 

 bacteria; admixture of dirt. 



PASTEURIZATION AND STERILIZATION 128 



Pasteurization ; sterilization. 



THE USE OF MILK FOR INFANTS 147 



The digestion of milk by infants; comparison of cow's 

 milk with mother's milk; modified milks and special milk 

 preparations; relation of milk to infant mortality. 



PUBLIC CONTROL OF THE PRODUCTION AND HANDLING OF MILK. . . 157 



Development of city milk supplies; laws and regula- 

 tions for the control of milk; regulations regarding the 

 production of milk; the health of the herd; feeding cows; 

 care of the stable; milking; health of the attendants; the 

 water supply; the care of milk on the farm; transportation; 

 regulations concerning sale and delivery; labeling milk; 

 milk packages; public supervision to prevent adulteration; 

 methods of examination; sampling; specific gravity; fat 

 determination ; total solids ; adulterations and their detection ; 

 public supervision to prevent the sale of deteriorated milk. 



ix 



