HOW DOES THE BODY MOVE? 



371 



than broken bones, for they heal slowly. Sprained joints 

 should be bandaged carefully, have frequent hot applica- 

 tions, and should be rested until well. 



Cartilage and Bones. If you have ever measured your 

 height after getting out of bed in the morning, and again 

 just before going to bed at night, you would be astonished 

 to find that you had grown shorter during the day. But 

 why ? Your backbone is made up of a number of separate 

 bones put together in the form of a double curve. Be- 

 tween each of these bones is a pad of elastic substance 

 called cartilage. This protects us against jars when we 

 walk or jump. You can thus see why the body is shorter 

 at night. Cartilage 

 is found between 

 all movable bones 

 and serves to make 

 them more elastic, 

 thus protecting 

 them against break- 



The Value of 

 Good Posture. We 



all admire a boy or 

 girl who stands 

 erect and carries the 

 body well. They 

 look alert, strong, 

 and graceful. It is 

 said that more 

 young people are 

 turned down from 

 jobs because of the 

 bad impression 

 given from poor 

 posture than for 



Wright Pierce 

 Examples of poor and fair posture in college boys. 



