77 



that, if the analogies are to be carried out, this re- 

 duction must be supplemented by the movement 

 of other parts not present in the snake. 



§ 80. The front space, bare of ribs — the neck — 

 carries the head, and the head, as comparative 

 anatomy has shown, is made up of consolidated 

 vertebrae. Like the vertebrae of the back, the head 

 carries ribs, viz., the fore-limhs (or arms), anal- 

 ogues of which have been traced, du'ectly con- 

 nected with it and the loiuer jaw. 



It is easy, therefore, to conceive that the head 

 may gather to itself, by means of its spinal attach- 

 ments, of the connections of the lower jaw, and of 

 those of the fore-hmbs, all the threads of force col- 

 lected by the trank and limbs, and that, thus hold- 

 ing the moulds of all motions, it may direct their 

 subsequent developments. 



Thus the articulation of the head is the working 

 medium between the brain and the body, when it 

 gathers the ribs and limbs of appui on one bear- 

 ing, with the eye diagonal to the rear appui, 

 as the pivot, and when, completing this gathering, 

 with the same eye as a point of direction, it 

 double tmsts them on the other bearing, and 

 holds the nascent curves of replacement ready to 

 discharge their predecessors. 



