Chap. V. The Anatomy of a UOKS>'E. 75 



The third arifing partly nervous and partly flertiy, from 

 the under Side of the Coxendix^ is inferred near the lall. 

 The fourth, having a hke Origin from the top of the Cqx- 

 endix^ runs along the Infide of the Thigh, and ends in a 

 round Tendon ; which joining with the Tendon of the 

 jfirll Part of this Mufcle, has the fame Infertion with it. 



The Thigh is alfo turn'd outwards by j„j f^^ ,v 

 four fmali Mufcles, called ^adrigemini, Jt^warl by 

 all which are placed one by another, upon fo^r. 

 the Outfide of the Articulation of the 

 Thigh. The firfl is the Longeft, and takes its Origin from 

 the Lower and Outer Part of the Os Sacrum ; afterwards, 

 paffing over the great Rotator^ it is inferred into the Out- 

 lide of the lower End of the Thigh-bone. 



The fecond and third arife both of them from the Knob 

 of the Os IJchium, near each other, and are inferred with 

 the firft. 



The fourth is more flefhy than the reft, arifing from the 

 inner Part of the Knob of the Ifchium^ and terminating 

 with the former : To thefe mull be added the Deltoid€S 

 of the Thigh, which fpring from the Outfide of the Tip 

 of the Ileu7n^ with a Sharp beginning, but growing Trian- 

 gular, is inferted v;ith a broad membranous Tendon into 

 the Outfide of the Thigh-bone ; by its Situation it feems 

 to alTift the Adion of the Oiiadrigemini. 



But laflly, the Thigh is turn'd obliquely <^ , . , .. 

 hy two Mufcles called Obturatoies, or Stop- /y"L"^^^ '^'^' 

 pers. The firft is called Obturator Inter- 

 nui^ and takes its Origin from the inner Circumference of 

 the Hole abovementioned, and is inferted into the Cavity 

 of the great Rotator. The Obturator Ext emus., from 

 the external Circumference of the faid Hole, and is inferr- 

 ed in the lame Cavity with the former. 



The Leg has three feveral Motions peculiar to it, viz. 

 it is bended, extended, and turned obliquely Outwards ; 

 to perform all which Motions, there are the fame Number 

 of Mufcles in Horfes as in Man, only that feme of them 

 are different from thofe in Men, with refped to their In- 

 fertions. 



It has firft of all five Mufcles, called Ex- The Leg is ex- 

 tenders, of which the firft is named Mejn- tended by five 

 hranofus ; and by fome the Fafcia Lata, Mufcles. 

 becaufe it involves and covers almoft all the Mufcles of 

 the Thigh. This Mufcle rifes flefhy from the upper Part 



of 



