MARKET MILK AND CREAM 123 



experiments indicate that perfectly sound, normal 

 milk is more completely digested than either Pas- 

 teurized or sterilized milk ; the difference in diges- 

 tibility, however, between sound, fresh milk and 

 Pasteurized milk is small, but in favor of the fresh 

 milk. Sterilized milk is less digestible than Pas- 

 teurized. 



112. Condensed Milk. — Another method of pre- 

 serving milk is to remove a portion of the water by 

 means of condensing in a vacuum pan and then seal- 

 ing the condensed product while hot. Milk that is 

 properly condensed can be kept for a long time, and 

 in some localities it is the main source of milk supply. 

 Whenever a can of condensed or Pasteurized milk is 

 opened, the same care is necessary to protect it from 

 contamination as if it were fresh milk. 



113. Milk as Human Food. — There is no food that 

 has a higher value than pure milk. Too frequently 

 its nutritive value is impaired by its being impure. 

 Contaminated milk, like any impure food, should not 

 be used. Milk should form a part of the dietary, as 

 it is easily digested, and assists in rendering other 

 foods more digestible. Experiments have shown 

 that at a\'erage prices milk is not a luxury, but an 

 economical food. Milk furnishes a large amount of 

 digestible nutrients, and, in the case of a number of 

 diseases, it is the only food that should be allowed. 

 Milks with either the maximum or minimum fat 

 content are not the best for food purposes, but milk 

 containing about 4 per cent of fat generally gives 



