THE COW IN HEALTH AND DISEASE 35 



the milk to the boiling point on several con- 

 secutive days. It is not good for infant feed- 

 ing, as it produces a chemical change in the 

 digestive ferments of the milk. 



Certified milk is that which is certified to be 

 of certain standard. It is guaranteed to be up to 

 the standard which may be set by the city or 

 the dairyman himself. This kind of milk is 

 very safe. 



Modified milk is prepared especially for in- 

 fants. In cow's milk you will find more protein 

 and less milk sugar, and it also has larger fat 

 globules, and there is more casein in proportion 

 than there is albumen. The deficiency in milk 

 sugar can be remedied by adding milk sugar or 

 rice flour, or arrow-root. The casein may be 

 rendered more easily digested by the addition of 

 lime water. Most infants will thrive on modified 

 milk when the whole milk is injurious to them. 



Homogenized milk is milk that has been forced 

 through capillary tubes with great force against 

 a resisting surface with sufficient force to break 

 up the milk globules, thus producing a more per- 

 fect emulsion. 



There are many infant foods, some of them 

 containing the nutrients of milk, and some that 

 do not. But there are some of them good and 

 useful, and others that are dangerous. If it is 

 absolutely necessary to resort to artificial feed- 

 ing it is best to consult a physician before using 

 a prepared food. 



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