22 MANUAI, OF NATITRB STUDY. 



bark of the tree as to its purpose, as to its cracking 

 open as the growth of the tree proceeds. From the 

 foregoing facts reach the conclusion that our skin 

 protects inner parts from injury : that our skin is 

 scaly, and these scales become loosened as our body 

 grows, and, instead of cracking open like the bark 

 on the tree, they must be washed oflf so as to give 

 room for the new skin to form and do its proper 

 work. Is the skin of the same degree of thickness 

 all over the body? Is it just the same on the soles 

 of the feet and the palms of the hands as it is on 

 the other parts of the feet and hands ? Can you in- 

 crease the thickness of any part of the skin ? How? 



Why has the hickory bud such heavy scales in 

 cold weather, and the geranium bud none ? Why 

 is our skin thicker where most exposed ? How is 

 the skin kept moist ? How does the moisture get 

 through the skin ? 



Other matter that would be an injury to us, if left 

 in the system, comes out with the moisture. Bring 

 out the thought that there are thousands of these 

 little openings on the skin that must be kept clean, 

 hence the bath and clean under-clothing may be 

 discussed here. 



The following conclusions in regard to the skin 

 should be fixed upon the minds of the children : 



1. The skin serves for protection of the body. 



