212 



HOUSE AND MAN. 



intended to sustain the head in a horizontal position. 

 This we can realise if we have dropped some small 

 object and have been hunting for it on our hands 

 and knees. 



The horse, however, needs a m ch more elaborate 

 ligament. At a is the upper and rounded portion which 

 is attached to the head. Widening and thickening 

 as it passes away from the head, it reaches the upper 

 processes of several vertebras of the back. In addition 

 it sends out a series of branches which are attached 

 to the vertebras of the neck, as shown at B. 



Still carrying on the train of reasoning, an elastic 

 hoof and neck would be useless if the remaining 



J-ig.2. 



VERTEBRAE AND LIGAMENTS. 



portion of the spine were rigid, and so we find that 

 the elasticity of the neck is carried through the rest 

 of the spine. In the illustration we have seen how 



