Chap. VI. The Anatomy ^/ /^ HORSE. 91 



^ncfhollow, but arched on its Outfide ; it is joined to no 

 Bone but by its lower End, where it has a Cap that receives 

 the round Head of the Shoulder- bone : It is however knit 

 to feveral Parts by the Mufcles which are inferted into it, or 

 take their Orig;in trom it. It has three Procelies, the firft is 

 that Part which forms its Neck ; the fecond is extended 

 dong the Middle of its Outlide, and is called its Spine. The 

 third is towards its lower and Inlide, and from the Refem- 

 Dlance it has to an Anchor, is called Afichoroides^ or its An- 

 :hor-like Procefs. 



It has al fo about its Neck five Appendages, three of which 

 ifFord an Original to fome Mufcles, and from the other two 

 irife the Ligaments by which the Head of the Shoulder- 

 Done is tied into its Cup. Round its Brim there is a thick 

 Griftle, which not only makes its Cavity the deeper, that 

 :he Head of the Shoulder-bone, which is joined into it, 

 [hould not fo eafily flip out, but alfo facilitates its Motion. 



The Shoulder-bone has two Heads, the <^y^^ q^ Huj^g, 

 jppermoft inferted into the Cup of the j.]^ oj. shouUev' 

 Blade- bone, and the lowermoft joined to bone. 

 the upper Part of the Cubit or Leg-bone. 



The uppermoft Head is large and orbicular, cover'd with 

 ,1 Griftle, and is, at firft, only an Appendix to the Cubit ; 

 3ut in time becomes a Procefs of the Bone itfelf ; on the 

 •Outfide of this orbicular Head there are two lefler Promi- 

 nences, into which two Ligaments are inferted ; and on its 

 Infide there is a Cavity, out of which arifes the ftrong Liga- 

 ment that ties it into the Cup of the Blade. 



The lower Head of this Bjone^, which in a human Body 

 is articulated with two Bones, viz, the Radius and Ulna^ 

 is in a Horfe only united to one ; yet it is fo firmly cou- 

 pled to that one, that it cannot be eafily difplaced ; for 

 there being three Procefies, and two Sinus' s^ between it 

 and the Cubit, they both receive, and are received of each 

 other : And befides thefe Procefies, which ferve to its 

 Articulation, there is on pach Side one, from whence arife 

 the Mufcles which lie on both Sides of the Leg. About 

 its Middle there is a Perforation, by which the Blood- vef- 

 fels have Recourfe to and from the Marrow contained 

 within its large Bore, and are thofe by which it is nou- 

 riftied. 



' The next Bone, call'd the Cubit^ or Leg- The Cubit, or 

 5one, reaches from the Elbow to the Shank. Leg-bone, 

 This Bone has on its hinder and upper Part a notable 



Pro- 



ll 



