1 6 The Anatomy 0/ ^ H O R S E. Chap. II. 



//. Suhjiance. ,}^'^^, '««™^' Subftance of the Yard con- 

 nils or two nervous Bodies, which, as in 

 Man, make up the greateft Part of its Bulk. Thefe two 

 Bodies are very fpungy and open in a Horfe, and when 

 dried, are extremely light ; but in a Bullock, and fome 

 other Animals, they are more compa6t and folid. They 

 2re compofed of a vaft many Branches of Veins, Arteries^ 

 and Nerves, which are variouily interwoven one with an- 

 other. On the underfide, between thefe two cavernous 

 Bodies, runs the Urethra^ or Pifs-pipe, from the Sphinder 

 of the Bladder, to the Etxremity of the Glans or Nut, 

 which alfords a Pallage both for the Urine and Seed. 



The Glans is an Appendage to the Yard ; it is of a 

 round Figure, but very thin, in proportion to what it is in 

 Man ; it is not fo cavenous as the Yard, but of a quicker 

 Senfe, being the chief Seat of Pleafure in Copulation. 

 Its Mufcles T\\t Yard has two Mufcles on each Side 



towards its Root: The firft Pair fpring 

 from the external Proofs or Knob of the Hip-bone, and 

 held the Yard in Eredion ; the other two rife from the 

 Fundament, and are called the Dilaters^ becaufe they 

 ferve to open and widen it for the freer Pallage of the Seed 

 Its Veffeh. ^^^ Urine. Its Veins and Arteries fpring 



* from the Hypogajiricks^ and its Nerves from 



the lower Vertebral. 



^he Stones, '^^^^ ^° ^^^ Y^lxA^ the tejies^ or Stones, 



properly take place, becaufe in them the 

 Seed is prepared : They are two glandular Bodies of an 

 oval figure, fituated under the Root of the Yard, hanging 

 in a Scrotum^ or Bag ; which is no other than a Produc- 

 tion or Continuation of the Sheath above defcribed. The 

 Stones have each a Branch from the Aorta^ or great Ar- 

 tery, which brings the Blood direftly from thence, not 

 only for their Nourishment, but for Seed. 

 *Their VefTels Their Veins are Branches of the Cava^ 



' fome of which open into the great Trunk 

 thereof, very near the Emulgents, but not in the Emulgents, 

 as in Men. Thefe are called the Preeparatoria^ or prepar- 

 ing Veflels, from which the upperlide of the Stones are cu- 

 rioufly clafped and twined, like the Tendrils of Vines ; and 

 growing narrower, and unitir^ more together as they ad- 

 vance towards the Belly, they are denominated by feveral 

 Names, as the Pyramidal Body, and Plesus PanipiniformiSy 

 &c. On the backfide of each Stone there is a longilh Bo- 



