CHAPTER VIII 

 FOOD MATERIALS 



THE ordinary diet of mankind includes both animal 

 and vegetable food and consists principally of cereals, 

 vegetables, fruit, milk, meat and eggs. In addition to 

 these, many miscellaneous substances such as tea, coffee, 

 chocolate, alcohol and the various condiments whose 

 nutritive value is slight, are used for their stimulating 

 or sedative effects. 



Plant foods. Cereals deservedly occupy a most im- 

 portant place in all diets, since they furnish more nutri- 



Coats (bran) 



Proteid grains 



Starch grains 





FIG. 53. Section through outer part of a grain of wheat. 



in proportion to their weight and cost than other 

 food substances. The cereal most generally used the 

 world over is wheat. The grains of wheat are enclosed 



