Chap. II. The Anatomy of a HORSE, ii 



The Mefentery, which in the next place, 'The Mefentery. 

 comes properly to be defcribed, Js fo called ^ 



from its Situation in the middle of the Guts. Its Rife is 

 from the third Rack- bone of the Loins, and is compoled 

 of three Mem.branes, the middlemoft being very full of 

 Kernels or Glands, which, when they happen to be over 

 much dilated, obftrua the Pallage of the Chyle, which 

 runs acrofs its Membranes ; and the Body being thereby 

 depriv'd of its Nourifhment, becomes lean and emaciate, 

 and at length falls into irrecoverable Difeafes. ^ 



At its Rile it is gathered together in a vaft maay Plaits 

 or Folds, which being open on that part of it to which the 

 Guts adhere, makes them lie in thofe Circumvolutions 

 and Turnings, in which we always obfervethem: And 

 this feems abfolutely neceflary, becaufe if they were not 

 tied in fuch a manner, but let loofe, the Excrements wou d 

 either pafs too quickly through them, or el fe be wholly 

 obftruaed, by reafon they would be apt to twift and en- 

 tangle one with another. 



In a Horfe, the Mefentery is ufually above a quarter of 

 a Yard in Breadth ; and befides, in the milky Veflels, which 

 are fuftained by it, it has abundance of Lymphaticks, 

 which fcrve to dilute the Chyle. Its Veins 

 are Branches of the Porta ; and its Arte- lis Vejfeh. 

 ries the Meferaick or Mefenter'ick : As to its 

 Ufe, it is fufficlently demonftrable from what has been 

 already faid concerning it, and the Guts. 



TABLE I. reprefents the Guts, as they appear after 

 the Caul is taken away. 



AAAA. ^heweih the Gut Colon, "X^'ith all its Circutn- 

 volutions and Folds, with the finall Necks, -xhich divide 

 it into three Parts ; as alfo the Space which it takes up 

 in the lower Belly. 



B. The Csecum or Blind Gut. 



C. The Reaum or Streight Gut, _ ^ , 



D. Part of the Diaphragm, or Midriff, 



E. The Tard. 



F. The Glans or Nut, 



G. The Fundament with its SphinHsr, 



§iv^ 



