EXERCISES 371 



13. Why does soup alone not make a full dinner? When a man 

 doing physical labor eats too large a proportion of meat, he becomes 

 hungry long before meal time, while if he has a fair share of vegetables 

 and bread, his meal " stays by," as he says, until the next meal. Ex- 

 plain why. 



14. Strychnine contains carbon, hydrogen, oxygen, and nitrogen; 

 is it therefore a food? Why cannot alcohol be properly called a food? 



15. Do you think that the following meal is " balanced," so far as 

 proteids, carbohydrates, and fats are concerned: soup, fried potatoes, 

 bread, and rice pudding? What do you say of the following menu: 

 ham and eggs, potatoes, nut salad, and mince pie? How about this 

 one: steak, baked potatoes, sliced tomatoes, and baked apples? 



16. What is the value of a vegetable salad in a dinner? 



17. Find, in a newspaper or magazine, a menu for breakfast, dinner, 

 and supper, and discuss it as to its food values and its economy. 



18. What foods are omitted from an athletic training table, and 

 why? 



19. Why can a dog digest bone? Why can he eat decayed meat, 

 while man can not? (Cf. 214 and 364.) 



