32 LABORATORY EXERCISES. 



has on the average the larger per cent, of 

 proteid ? 



2. Which kind has the larger per cent, of fat? 



3. Which kind has the larger per cent, of car- 



bohydrates ? 



4. Note the principal nutrients present in ani- 



mal foods, and state what use the body 

 can make of this class of foods. 



5. In the same way state the principal uses of 



vegetable foods. 



6. Name five animal foods that contain a large 



per cent, of material for muscle-build- 

 ing. 



7. Name five vegetable foods that contain a 



large per cent, of material for muscle- 

 building. 



8. Name five foods that could supply a large 



amount of heat for the body. 



9. Suggest reasons why any of the foods 



named in answer to questions 6, 7, and 

 8 above would not be the most healthful 

 foods for the body. 

 B. Pecuniary economy of food. 



(Make estimates from Chart 2, p. 22, and 

 compare with per cents, given in Table B, p. 

 27, in " Foods; Nutritive Value and Cost.") 



1. Can larger amounts of animal food or of 



vegetable food be purchased for ioc.? 



2. Suggest some reasons for the fact you have 



just stated. 



3. Which kind of food material named on the 



chart is cheapest? (That is, of which 



