97 



hicomposite spine (§ 84) formed, the lower jaw should 

 be firmly closed and set on the left side." 



Also that, under the same circumstances, the 

 left fore-leg should be raised, or if this were fixed, 

 the head drawn somewhat to one side. This would 

 corroborate what has been said (§ 94) in regard to 

 the free fore-leg beiag under the influence of the 

 neck. 



Again, as the left stemo-mastoid must relax 

 after the spring, so must the left side of the jaw, 

 then the opposite (here right ) side will begin to take 

 appui in its socket, we expect to show how either 

 side of the jaw gradually sets in its socket, and 

 how, in bearing on its outer or inner side, its actions 

 resemble, with reversed relations, the " bearings " 

 of the ribs and limbs. 



§ 97. Great as is the analogy as to shape which 

 the fore-hmbs have to the hinder-ones, this analogy 

 is by no means complete. Both are modified ribs, 

 but the action of the two is not only different, in 

 that the fore-limbs act more largely as supporters, 

 and the hind-limbs as propellers, but, while the 

 hind Hmbs follow chiefly, the movements of the 

 "composite S," the fore Hmbs, although connected 



* We instance the left side, but, of course, with proper changes, the 

 same holds good for the right. 



