THE HONES AND JOINTS. 



31 



ing the form which it is to keep through life. It is pliahle, 

 and may be molded to healthfulness and grace, or to 

 deformity. Nature should be allowed to shape it in her 

 own way, and all habits of dress or attitude or movement 

 that interfere with the natural outlines should be care- 

 fully avoided. 



THE JOINTS. 



SECTION VII. 1, The joints of the body with which 

 we are most familiar are movable ; but most of the joints 

 of the head-bones are like a 

 joint in a table or chair. 

 They are fixed. 



The joints between the 

 bodies of the vertebrse have 

 a little motion, but are not 

 freely movable like the joints 

 of the limbs. 



There are, then, in the 

 body, 



Immovable joints. 



Slightly movable joints. 



Fredy movable joints. 



2. The movable joints are 

 of various kinds. Sometimes JOINT9 op f _ t Fronla| 



the tWO Surfaces Only glide a bone. 2. Parietal bone. 3. Occipital 



little on each other, as in the 



wrist. Sometimes one bone moves on another, like a 



door on its hinge. The elbow and the ankle are of this 



kind. 



Sometimes a round bone fits into a round socket, and 

 moves in all directions. The hip-joint is of this kind 



