90 The Anatomy ^/ ^ H O R S E. Chap, VI. 



fering from thofe in Man, which are joined with the 

 Shoulder. They help to fupport the Shoulder-blades, and 

 keep them from iliding forward upon the Breaft-bone and 

 Shoulder-bones, which, upon a Fradure, or Diilocation 

 of thefe Bones, frequently happens. 

 fj., „., Next the Collar-bones are feated the 



Ribs. They are in all thirty four, viz. fe- 

 venteen on each fide. Their Subftance is partly bony, and 

 partly cartilaginous. The nine uppermoft are called the 

 true Ribs, becaufe each, with its Fellow, makes a Kind of 

 Circle, being joined together by the Mediation of the Rack- 

 bones of the Back behind, and the Breaft-bone before ; 

 each Rib has two Knobs, one of which is received into the 

 Sinus of the Body of the Vertebra, and the lefler Knob 

 into that of the tranfverfe Procels ; they are in like manner 

 joined to the Breaft-bone, their Cartilages ending in little 

 Heads, which are received into its fmooth Sinus's. 



The eight lowermoft are call'd the Bajhird-ribs, becaufe 

 they don't circumfcribe the Body, as the uppermoft do, 

 by their twofold Articulation into the Rack-bone, and 

 Breaft-bone. They are of a more foft and pliable Sub^ 

 Hance than the true Ribs, and the nearer they advance to- 

 wards the Loins, they grow fhorter, leaving an open Space i 

 for the Stomach and Guts, which might have ealily been i 

 hurt by them, as often as diftended with Meat and Water. 



They are all rough and uneven on their Outlide, efpecial- 

 ]y towards the Back, that the Ligaments, by which they 

 are tied to the Rack-bones, might take the firmer Hold; 

 but on their Inlide they are fmooth, and covered with the 

 Pleura, left they fhould hurt the Lungs, and the other 

 Parts that bear againft them. They are alfo narrow and 

 thick towards the Back, but broader and Hatter towards 

 the Breaft, and are furrowed on the lower Part of their 

 Infide, in which fome Blood-vellels and a Nerve are con- 

 duced. They are a Defence to the Bowels within the 

 Breaft, and like wife to thofe in the lower Belly. 



§ V. Of the S lade- bone, the Shoulder-bone y and the Boms 

 of the Fore leg and Foot, 



cri T>r J L The Blade- bone, or Shoulder-blade, is 



feated like a I arget upon the bide of the 



true Ribs, reaching from the Vertebra of the Back almoft' 



to the Collar-bone. On its Lilide it is fome what concave 



