IN HUMAN PHTSIOL OOT. 175 



lead to gluttony. They supply the system with an over- 

 abundance of nutrition, for which the blood has no use, 

 and so lead to biliousness and other diseases of the blood 

 and digestive organs. 



1 1. Why are warm biscuit and bread hard of digestion ? 



They form a pasty mass,, which the juices of the diges- 

 tive organs penetrate very slowly. 



12. Should any stimulants be used in youth ? 



No. The system is then vigorous, and all its* functions 

 promptly performed. If stimulants are ever used, it 

 should be when the body needs forcing, as when recover- 

 ing from disease, or languid with the decay of the natural 

 powers in old age. 



13. Why should bread be made spongy ? 



(See Question n.) 



14. Which should remain longer in the mouth, bread or 

 meat? 



Bread, since the pepsin is essential to the conversion 

 of starch into sugar ? 



15. Why should cold water be used in making soup, and 

 hot in boiling meat ? 



In the former case, we desire to extract the juices of 

 the meat ; in the latter, to retain this by quickly coagu- 

 lating the albumen on the surface of the meat 



1 6. Name the injurious effects of over-eating. 



(See Physiology, page 151.) 



17. Why do not buckwheat cakes, with syrup and butter, 

 taste as well in July as in January ? 



In the winter, the system craves highly carbonaceous 



