24 BULLETIN 540, U. S. DEPARTMENT OF AGRICULTURE. 



Correlation. — Chemistry: Compare the composition of the body 

 with that of some typical foods. 



Supplementary topic. — What books on food should a housewife 

 have? Plan the entire library of an ideal farmer's family. What 

 general subjects would be included in such a library ? 



LESSON 49. 



Problem. — To bake apples and to cook cranberries. 



Points to be brought out. — Apples cook more quickly with the skins 

 on and the cores removed . Water is unnecessary in most cases. The 

 skin keeps in the steam and the volatile flavors. Apples which have 

 been pared and cooked without any water in the fireless cooker 

 approximate baked apples in flavor. In cooking cranberries we add 

 the sugar at the beginning of the operation if we wish the berries to 

 hold their shape, at the end if we wish to make a sauce of them. 

 Fruits are very valuable in the daily dietary, because they furnish 

 mineral matters and mild acids, and should appear in some form other 

 than rich preserves at least once daily. 



Reference. — U. S, Dept. Agr., Farmers' Bui. 293, 



Correlation. — Chemistry: Make a list of some of the chemical 

 elements which are important constituents of fruits and list the 

 fruits in which they are present in the largest amounts. English: 

 List and discuss varieties of apples available in your community. 

 What kinds would you like on your farm ? 



LESSON 50. 



Problem. — To study the relation of fresh air and exercise to health. 



Points to be brought out, — Stress the value of fresh air and exercise. 

 Night air is not harmful. It has been proved that outdoor sleeping 

 even in cold climates increases the resistance to disease and renders 

 one less susceptible to colds. 



Reference.— Book on personal hygiene. 



Correlation. — Physical training : Make out a weekly schedule which 

 will furnish exercise of the proper type in the required amount ; men- 

 tion outdoor fun which a neighborhood group or a family group can 

 occasionally enjoy together. 



LESSON 51. 



Problem.. — To study the relation of personal cleanliness to health; 

 toilet soaps. 



Points to be brought out. — Personal cleanliness is necessary for the 

 best health. It includes daily bath to remove perspiration, oil, etc., 

 from the skin; care of teeth; care of hair; sufficient changing of cloth- 

 ing ; and keeping the digestive tract clean. Constipation is the root of 

 many ills. The purpose of the daily bath is to keep clean, not to get 

 clean. The bath furnishes exercises to the skin. If one can stand the 



