96 The Anatomy of a HORSE. C^ap. Vf. 



The Ifchium, The third b the Inferior 2v\d Pojhriory 



«r Coxendix. called the Ijchiu?n^ or Coxendix. It has a 

 large Cavity, which receives the Head of the Thigh-bone. 

 This Cavity has its Circumference lipp'd with a Cartilage^ 

 call'd its Supnciliimij or Brow, where there are feveral 

 Sinus's or Protuberances, ordained particularly for the 

 Produdion of Mufcles, and partly for Ligaments'. 



In all young Animals thefe may be divided into feveral 

 Bones ; but in fuch as are old, the Cartilages, by whichr 

 they were at firft only Joined, change their Nature, and 

 become bony, by which Means they grow united, and 

 make but one Bone. 



§. VIII. Of the Banes of the thighs. Hinder k^s, and Feet,- 



TheThigh-bcxe. The Thlgh-bone is that which reaches 

 from the Hip to the Stifle ; it is long- and 

 round, and in fome Parts a little convex : Its upper Part 

 is made up of a large Head and Neck, with two Proceilesj 

 and below it determines into a Head, which has iwo Pro- 

 dudions, with a Cavity between them. 



Its upper Head is round, and fomewhat longifli, that it 

 may the better fill up the Acetabulum, or Cup, which of 

 itfelf is deep, but the more fo, as it is encompalled with a- 

 Cartilage. There is alfo a thin Cartilage which covers the 

 round Head oi this Bone, that its Motion may be glib and 

 eafy within the Cup ; and becaule of the great Weight 

 ■which the Thigh fuftains, it is therefore tied by two ftrong 

 Ligaments, one of which is round, arifing from the Infide 

 of the Acetabulum, near its Bottom, and implanted into 

 a little Si?iuiov\. the Upper and Fore- part of the faid Head- 

 of the Thigh-bone, and the other, proceeding from the 

 Edge of the Acetabulum, hy the Aflillance of a membranous' 

 Subftance, inclofes the whole Articulation. 



The flender Pan, under the Head of the Thigh-bone, is- 

 called its Neck : It is pretty long and oblique, and is ac- 

 counted a Procefs of the Bone. There arife, at the lower 

 End of the Neck, two other Procelles, which go by the 

 Name of the greater and lefler Trcchanters. The upper- 

 moft or larger Procefs is rough, becaufe of the Infcnion 

 of fome Mufcles into it. The undermoft is alfo fomewhat 

 uneven, efpecially towards its Root, where the ra/ius In- 

 ternui rifes. A late Anatomift has obferv'd, that thofe 

 Protuberances increafe mightily the Force of the Mufclesy 

 i.- by 



