CONTENTS 



PAGE 



I 



Chemistry of Cow's Milk and Milk Products ... 1 



II 



Methods of Sampling and Preserving Milk ... 20 



III 

 The Babcock Test Description of Apparatus and 



Materials 32 



IV 

 Method of Operating the Babcock Test 57 



V 

 Method of Testing Cream by the Babcock Test . . 73 



VI 

 Methods of Testing Skim-milk, Buttermilk, Whey, 



Ice-Cream, Condensed Milk and Powdered Milk 93 



VII 

 Methods of Testing Butter and Cheese for Fat . . 101 



VIII 

 Methods of Testing Butter for Water ...... 110 



IX 

 Methods of Testing Butter for Salt 125 



X 



Methods of Testing Acidity of Milk and Milk Pro- 

 ducts . . 131 



ix 



