Chap. V. The Anatomy of a HORSE. 75 



The third arifing partly nervous and partly flefhy, from 

 the under Side of the Coxendix^ is inferted near the laft. 

 The fourth, having a like Origin from the top of the Cox- 

 endixy runs along the Infide of the Thigh, and ends in a 

 round Tendon ; which joining with the Tendon of the 

 firft Part of this Mufcle, has the fame Infertion with iu 



The Thigh is aifo turn'd outwards by ^ . , . 

 four fmall Mufcles, called ^adrigemini, out^wZds h 

 all which are placed one by another, upon a^^^ 

 the Outfide of the Articulation of the 

 Thigh. The firft is the Longed, and takes its Origin from 

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

 pafling over the great Rotator^ it is inferted 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 0; IJchium^ near each other, and are inferted with 

 the firft. 



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

 inner Part of the Knob of the Ifchlum^ and terminating 

 with the former : To thefe muft be added the Deltoides 

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

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

 gular, is inferted with a broad membranous Tendon into 

 the Outfide of the Thigh-bone ; by its Situation it feem« 

 to affift the Aflion of the Quadrigemm, 



But lallly, the Thigh is turn'd obliquely ^ , . ... 

 by two Mufcles called Obturator e^, or Stop- iTtn^o,' 

 pers. The firft is called Obturator Inter- 

 nus^ and takes its Origin from the inner Circumference of 

 the Hole abovementioned, and is inferted into the Cavity 

 of the great Rotator. The Obturator Externus^ from 

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

 ed in the fame 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 fome of them 

 are different from thofe in Men, with refpe(ft to their In- 

 fertions. 



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

 lenders^ of which the firft is named Mem- tended by fi'vc 

 hranofm ; and by fome the Fafcia Lata^ Mufcles. 

 becaufe it involves and covers almoft all the Mufcles of 

 uhe Thigh, This Mufcle rifes flefhv from the upper Part 



of 



