I IO 



HUMAN BIOLOGY 



Beef 



Bread 



Bananas 



Nuts 



Potatoes 



Lettuce 



eggs, oysters, green corn, cabbage, pork, 



watermelons, grains, crabs, fish, white or 

 -7 Irish potatoes, yams, tomatoes. 



The Order in which Man increased his Bill 

 j of Fare. Flesh-eating animals have a short 

 a food tube, as their food is digested quickly; 

 <, they have long, pointed teeth for tearing, sharp 



claws for holding, and a rough tongue for rasp- 

 g ing meat from the bones. Man's even teeth, 

 long food tube, soft and smooth tongue, and 

 flattened nails, indicate that he is suited for a 

 j> diet largely vegetable (see Table, p. in). The 

 . race at first probably ate tree fruits? both nuts 

 IT and fleshy fruits (Fig. 101). Because of 

 Is famine, or after migration to colder climates, 

 a and after learning the use of fire, the race prob- 

 | ably began to use flesh for food. Afterward 

 a the hunters became farmers and learned to 



cultivate grain, which formed a most important 

 "o addition to the food supply, and made possible 

 3, a dense po'pulation. Coarse, woody foods, like 

 c the leaves and stems of herbs, were probably 



added last of all. Woody fiber (cellulose) can 

 c be digested by cattle, but it cannot be digested 

 g by man. 



The Natural Guide in Eating is Taste. 

 Man should preserve his taste uncorrupted as, 

 g next to his conscience, his wisest counselor 

 "* and friend. It has been developed and trans- 

 5 mitted through countless ages as a precious 

 a heritage. Simple food is more delicious to 



people with natural tastes than the most arti- 

 Q ficial concoctions are to those with perverted 

 * taste. 



Animal Food. T\& flesh of animals 

 3 furnishes proteid and fat (Fig. 102). 

 ^ As cooking coagulates and hardens 



g * See Genesis i. 29. Some raw food should be 



eaten daily. Pecans are the most digestible of all 



nuts. A half dozen or more eaten regularly for 

 breakfast will prevent constipation or cure it in ten 

 days or less. 



