MANUAL OF NATURE STUDY. 63 



the tenacious property of wheat.) Corn contains 

 more fat than wheat, also more starch. Which 

 v/ould be the better food for Klondike, corn or 

 wheat ? Why ? 



Beans and peas are good food because they con- 

 tain so much proteids and starch. 



Potatoes contain too much water and not enough 

 proteids to be regarded as the best food. 



Radishes, cabbages, turnips and carrots contain 

 too much water and too little starch to be valuable 

 as food. 



Has alcohol any properties whereby it may be 

 called a food ? Has tea or coffee ? What are the 

 claims for these drinks? See Martin's Human 

 Body or any other good physiology for full discus- 

 sion of these subjects. 



What are mineral foods ? Why do we need salts 

 of iron and lime and common salt? What kind 

 of food helps to make bone ? 



3. Water, why we use it. — Where may water be 

 found? In lakes, rivers, ocean, wells, dew on 

 grass, rain, fog, etc. 



Take a chunk of dirt the size of a base ball and 

 squeeze it between two boards, putting on several 

 pounds pressure, and the boards will become moist- 

 ened from the water pressed out of the dirt, if the 

 dirt is not too dry. 



