FOOD 



129 



TABLE II 

 FOOD VALUES, UNITES, AND PRICES 



for a meal, the appetite usually ceases before a sufficient 

 quantity of food has been taken to satisfy the needs of 

 the body. Since every article of food needs its own 

 active principle for digestion, and since the glands which 

 secrete the digestive fluids can secrete only a limited 

 number of enzymes at one time, the number of different 

 articles of food eaten at one meal should not be great, 

 but just sufficient to cause the appetite to remain normal 



