MANUAL OF NATURE STUDY. 
63 
the tenacious property of wheat.) Corn contains 
more fat than wheat, also more starch. Which 
would 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. 
