Ill 



FOODS 



formed for them. They are then said to be palatable. 

 Mustard, ginger, pepper, pickles, olives, vinegar, horse- 

 radish, and flavors of all kinds belong to this class. 

 Some of these things have no value whatever as foods, 

 but may be of use to stimulate the appetite and to aid 

 digestion under certain conditions, if used moderately. 

 When a person is well he seldom needs anything to stim- 

 ulate his appetite, and the excessive use of all such sub- 

 stances is not only unnecessary but may be very harmful. 

 28. Animal Foods. The foods that come from ani- 

 mals are among the most important articles of our 

 daily meals. Only a few will be mentioned here. 



FIG. 7. Showing fat globules (Gunnison) : A, cream ; B, milk ; and 

 C, skim milk. 



I. Milk is almost an ideal food. It contains all the 

 food stuffs necessary for man and is about the only 

 nourishment adapted to infants. For an adult the pro- 

 portion of the different food stuffs in milk is not quite 

 right. He would be obliged to drink a large quantity 

 of milk in order to get the amount of proteids and 

 carbohydrates necessary. And, furthermore, man needs 

 a food that gives the stomach more to do. 



