SECRETION OF MILK 9 



"The casein, albumen, and sugar of the milk are 

 probably derived from the nitrogenous parts of the 

 food, through a special cell activity. 



"The ash or mineral matter comes partly from 

 the mineral matter in the food by transudation, 

 and partly as a result of cell activity in the gland." 



LACKING FORE UDDER DEVELOP- 

 MENT 



AN ABNORMALLY SHAPED UDDER 



These are brought together in the udder and dis- 

 charged as milk. Much of the activity takes place 

 during the milking operation, as the slaughter of 

 cows which have been giving large amounts of milk 



UNBALANCED AND BADLY CUT UP FUNNEL-SHAPED UDDER 



