106 



of skin stretched by this drawing hack, for the 

 "soler 



If the foot of the horse contains, as we 

 have supposed, only two digits, we must look for 

 the point of effect of the secondary section of the 

 " anterior winding-line" (§ 101) to the outer splent 

 bone at the hock, and regra'd it as only mediately 

 affecting the foot, through the connection of this 

 splent bone with the cannon bone. In the same 

 way, we must find the point of effect of the second- 

 ary section of the posterior line on the inner splent 

 bone, and its action on the foot only mediate, as be- 

 iore. 



The action of the secondary section of the j)OS- 

 terior lines and the final ad jastment, which, in man, 

 would be carried through the thumb, in imaginary 

 appui, must, for the horse, depend on movement in 

 the fore legs, and in the quasi ball and socket at 

 the base of the neck (§ 90), an unusual require- 

 ment for this movement may possibly account for 

 the " dishing " of a raised forefoot in some horses. 

 The dishing is evidently a prolongation of its in- 

 ner bearing, and this ^prolongation may, perhaps, 

 be owing to uncommonly extended action of these 

 parts before the "lift." 



The ox, &c., have two parts to the hoof, and, if 



