Chap. V. The Anatomy tf/ ^ H O R S E. 55 



and is fpread over the whole Dimenfion of the Cheek. 

 Befides its ufe in contrading the Cheek in Horfes and 

 other brute Creatures, it greatly afTifts the Aflion of chew- 

 ing, by turning the Meat which falls between the Teeth 

 and the Cheek, over again to be ground and broken. 



The Mufcles which are proper to the Lips fi^g p^lr pro- 

 only, are accounted by Anatomifts five Pair, per, and an odd 

 and one iingle Mufcle. The firft is called one. 

 Par attolkns, or Lifters up of the Lip. vjf.np • 

 This Pair fpring from the upper Jaw, where 

 it forms the Hollow of the Cheek, and are inferted in the 

 upper Lip near the Nofe. When both thefe Mufcles adt 

 together, they draw the upper Lip diredly upwards ; but 

 if only one ads, then is but one Side drawn upward ob- 

 liquely. The Adion of thefe Mufcles is very perceiveable 

 when a Stone- horfe fmells a Mare, or when any other 

 Horfe fmells at Duiig, or any other Thing that fends up 

 pungent Effluvia into the Noftrils. 



The fecond Pair are the abducent^ or ^ezond Pair. 

 Drawers of the Lip on one Side : They arife 

 from the Cavity that is under the Os Jugale, from whence 

 they take their Courfe on each Side to the middle of the 

 upper Lip, where they are inferted with a ftrong round 

 Tendon ; thefe jointly move the Lip upwards and out- 

 wards, as the former; and when they ad feparately, they 

 aflift the former, by helping to draw the Lip fideways. 



This third Pair is called by RioIaneSy Zu- 77/,.^ p^- 

 gomaticum, or Jtigale, from their Rife, 

 which is outwardly from the Procefs of the Bone of that 

 Name. Thefe reach to the Sides of the upper Lip, and 

 are inferted near the Corner of the Mouth. Their Ufes is 

 to draw the Lip fideways upwards. 



The fourth Pair is called Deprimem^ from Tourth Pair. 

 their Office of drawing the upper Lip down- 

 wards. They arife fiefhy and broad from the lowermoft 

 Part of the lower Mandible^ from whence each marches ob- 

 liquely unto the under Lip, and are inferted into it about its 

 middle. This Pair affift in the fame Adion with the firft 

 of the common Mufcles, called the Detrahem quadratus^ 



The fifth Pair, or oblique Z)^/ri;/;<j//i, from r.^ /- r p . 

 theirOffice of drawing the lowerLip oblique- 

 ly downwards and upwards : They take their Beginning 

 from the Sides of the lower Jaw, from whence they afcend 

 upwards, and are each inferted into the Corners of the low- 

 er Lip , E, 4 Thsr 



