CHAPTER VIII. 



THE HINGES. 



The Hip Joint. Shoulder Joint. Elbow 

 Joint. Ligaments. Capsules. Wear 

 of the Joints. Synovia. Abuses of the 

 Joints. 



THE house I live in differs in some respects, 

 as you have already seen, from many other 

 buildings. I will mention one important point 

 more, in which there is a striking difference. 



An ordinary building of wood, brick, or 

 stone, is intended to stand firmly. No part, 

 except perhaps a few doors, is made for motion. 

 The ends of the parts are usually. fitted together 

 by square edged joints, with the greatest ex- 

 actness. Then to complete the whole, and 

 make the frame as firm as possible, girts, studs, 

 braces, &tc. are added. 



