Chap. ir. The Anatomy of a HORSE. 7 



a ftreight Line from their Origin, at the Sidrs of the above- 

 mention'd Grillle, and the Ends of the Ballard Ribs to 

 the Share-bone, where they are inferted. There are in 

 thefe feveral tendinous Interftices, which are the Caufe 

 why Tome Anatomifts have divided them into divers 

 Mufcles. They (horten the Belly, by drawing the Breaft 

 and Share -bone towards each other. 



The fourth Pair are called the Pyrami- The Pyramidal 

 dal^ from the Refemblance they bear to a Pair. 

 Pyramid, being broad at bottom, and growing gradually 

 narrower towards the Top. They feem to be derived from 

 the ftreight Mufcles, and are allilling to them in contrac- 

 ting the Belly. 



The lalt are the Tranfverfe or Crofs The Tranfverfe 

 Mufcles, which have their Origin from the P^'''- 

 lovvermoft Baftard Ribs on each Side, from the tranfverfe 

 Procefles of the Joints, or Vertebra of the Loins and 

 Haunch-bones, from whence, running acrofs the Belly, 

 %hey are inferted in the White Line. 



Belides that thefe Mufcles are a Cover and Support to • 

 the lower Belly, they have not only their particular Of- 

 fices, but a6l in Concert with each other, and give their 

 mutual Alliftance in comprefiing the Guts, to the Expul^ 

 fion of their Excrements. 



Underneath the Mufcles lies the Periio- The Perito- 

 «(?«w, which is the next proper Tegument nxum. 

 of the Guts. Is is a double Membrane, of an oval Fi- 

 gure, and is thought to derive its Origin from that 

 which involves the Pith of the Loins ; its Infide is very 

 fmooth, and lined with a fort of Mucus ^ which proceeds 

 from the Guts, over which it is fpread. From this Mem- 

 brane all the lower parts of the Belly are furnifhed either 

 with their common, or proper Membranes. It has Liga- 

 ments, whereby it helps to bind all the Guts in their proper 

 Situation, that no violent Motion may difplay them j it 

 alfo affords a ftronger Ligament to the Liver, and is a 

 great Support to a vaft Number of fmall Vefl'els, which 

 would either be broke, or twiftcd in fo long a Courfe, 

 were they not preferred within its Duplicature. 



§ II. Of the Caul 



The Caul feems to be a proper Invelop- TJje QauL 

 ment or Cover to the Guts, being in molt 



B 4 Animals. 



