trafton] outline OF NATURE-STUDY 141 



3. Breathing. 



How done, need of, frequency, lungs, lung capacity, breathing 

 thru mouth and nostrils, artificial breathing in case of 

 apparent drowning and gas suffocation. 

 Effect on breathing of tight clothing, and of exercise. 

 Problems — 



What takes place in our lungs while we are breathing? 



What are some of the things that interfere with proper breathing? 



4. Clothing. 



Purposes, dependence on season, how children in other lands 



are clothed. 



Animal coverings; hair, wool, fur, feathers, scales, skin, shell, 



silk. 

 Ability of clothing material to conduct heat. 

 Problems — 



How does the clothing of children in other lands differ from your 



clothing? 

 What health factors should determine the kind of clothing we wear? 

 What different kinds of coverings do animals have? 



5. Care of skin. 



Bathing, kinds of baths, swimming. 

 Problems — 



Of what value are the different kinds of baths? 

 What are the_strokes commonly used in swimming? 



II. Winter Pleasures. 



1. Outdoor sports; skating, formation of ice; floating of ice; value 



to body of outdoor exercise. 



2. Evening entertainments. 



Stereopticon, moving pictures, phonograph, talking movies. 

 Problems — 



How many kinds of skates are there? 

 How does ice form? 



How does a moving picture machine differ from a stereopticon? 

 How does the phonograph reproduce sounds? 



What advantages have the talking movies over the phonograph or 

 moving pictures alone? 



IV. Sky Studies. 



The moon; its size, distance, motions, relation to earth. 



Observations on its phases, changes in position in sky ; and changes 

 in time of rising and setting. 

 Problems — 



What effect does the moon have on man's life? 

 In what ways is the moon different from the sun. (See type lesson, 

 page 165.) 



