60 The Anatomy of a HORSE. Chap. V, 



The firfl of the common Pair is call'd the Sternothyrcoi^ 

 deum^ and by fome Sronchium. or the Weafand Mufcles ; 

 Thefe arife from the upper and inner part of the Breaflr 

 bone, afcending by the fides of the Windpipe to the fhield- 

 like Griftle, where they are inferted. Their Ufe is to draw 

 down the faid Griftle, and fo widen the Chink. 



The fecond Pair, call'd Hyothyreoideum^ arife from the 

 lower fide of the Qs Hyoides^ and are inferted into the The^ 

 reo'id Griftle. Thefe are fiid to ftreighten the Chink of the 

 Larynx^ tho' fome affirm they widen it, and that the other 

 Pair contract it. 



It t t A' r- '^^^ ^^^ ^^''* ^^ ^^ proper Mufcles of 

 del ^ ^^^ Larynx^ call'd Crycothyreoideu?n JntU 



cum, becaufe they take their beginning from 

 xht Ring-fafhion'd Griftle Cricoides, and are implanted in 

 the Sides of the Thereoides^ which they move obliquely 

 downwards, thereby opening the Chink of the Laryn)/^, 



The next Pair, named Crycoarytcenoldeum pojliciwi, arife 

 contrary to the former, from the lower and back Part of 

 the Ring-fafhon*d Griftle, and are inferted in the lower. 

 End of the Ewer- like Griftle, whereby they raife it upward 

 and backward, to open and widen the Larynx. 



The third or lateral Pair, anfing from the Sides of the 

 jRing-fafhion'd Cartilage, terminate in the Sides of the 

 Ewer-like Griftle, opening alfo the Larynx ^ by drawing the 

 Griftles obliquely to one Side. 



The fourth Pair are the largeft and ftrongeft of all the 

 proper Mufcles of the Larynx, and arife clofe one to ano- 

 ther from the Middle of the hollow part of the flVield-like 

 Griftle, filling that Cavity through its whole Length, and 

 are inferted into the two Sides of the Ewer-like Griftle, af- 

 fifting the former. 



The fifth and laft, called Aryttenoides, or Claudens fe- 

 cundum^ takes its Rife from the hinder Line of the Ewer- 

 like Griftle Arytcsnoidcsy and is implanted in the Sides of 

 the fame. This lingle Mufcle helps to ftrengthen the 

 Throttle, by drawing both Sides of the Ewer- like Griftle 

 together. 



<Ihe Fpialottis ^^^ Epighttis, ox Throat-flap, which 

 «o Mufcle, but covers the Chink of the Larynx^ has no 

 tn Creutiires Very diftindt Mufcles, but in ihofe Creatures 

 thatcken.^ the that chew the Cud ; and ihall therefore he 

 C»^. omitted in this Place. 



Tl^ie 



