Chap. VI. The Jnatomy of a HO KSV.. $7 



That Bone is called HyoiJes, from its 27^-? Os Hyoi- 

 Shape, being like the Greek Letter v {Tpfi- <les, or Bone of 

 Ion). It is feated at the Root of the Tongue, *^' Tongue. 

 being the Foundation or Supporter of it. It is made up of 

 three Bones, the middlemoft being gibbous outwards, but 

 inwards fomew hat hollow : The other two are called its 

 Cornuo^ or Horns, and are all tied to the adjacent Parts by a 

 Subftance which is partly nervous, and partly flefhy. 



This little Bone is of great Ufe ; all the Mufcles that 

 move the Tongue being either inferted into it, or taking 

 their Origin from it. It alfo gives Rife to fome of thofe 

 Mufcles that move the Larynx, or Throttle, and is a reft- 

 ing Place to the Epiglottis^ or Throat-flap, when it is 

 ■gifted up in Breathing. 



§ in. Of theYcxveoxx of the Neck, 



ThcNeck is madeup of fevenF^r/^^;'<^, The Vertebrae 

 or Rack- bones, reckoning from the Head of the Neck. 

 downwards, that next the Head being the firft ; they have 

 each of them a large Cavity, to give Way to the Spinal 

 Marrow : And befides this large Hole, which they have 

 in common with all the other Fcrtcbm, they have each 

 two fmall Perforations in their tranfverfe Procel^es,^through 

 which the cervical Veins and Arteries do pafs to the Head ; 

 and between their Joinings there is a third found, partly out 

 of the lower fide of the upper Vertebra., and partly out of the 

 upper fide of each lower Vertebra, by which the Nerves pafs 

 outward from the fpinal Marrow. 



The firft of thefe Bones, in a human Thefrfi is cal^ 

 Skeleton, is called Mas, becaufe the Head ^^^^''^ Atlas. 

 IS articulated to it, and, as it were, fupported by it ; and 

 may therefore retain the fame Name in a Horfe. Its Body 

 is flender, but more folid than the Tips of its Procefl'es, 

 which are porous and open ; inllead of its hinder Spine or 

 Procefs, it has only a femicircular Prominence jetting out, 

 left the larger ftreight pair of Mufcles, which pafs over it, 

 fliould be hurt in bending the Head forwards ; but it has all 

 its other Procefles in common with the reft. On the Forefide 

 o^xlsgXQdX Foramen inwards, it has a fmall Socket fomewhat 

 femicircular, and lin'd with a Cartilage, to receive the Tooth- 

 like Procefs of the fecond Vertebra. 



The fecond Vertebra is, becaufe of this ThefecondHen' 

 jProcefs, called Dentata j it is an Appendix, tata. 



G 4 which 



