48 The Anatomy of a HORSE. Chap. IV. 



Its VefTeh '^^^^ VeiTels of the Nofe arc Veins frofn 



• * the Jugulars, Arteries from the Carotids, 



and Nerves from the third Pair, befides the Olfadory 

 Nerves \^■hich arc proper to it. 



It is liii'd on its infide witli a fine Membrane, which 

 taketh its Rife frojii the Dura Mater, There arc on the 

 back-fide of this Membrane abundance of little Kernels, 

 vhich fepp.rate a great Part of the Moillure which comes 

 from the Nofe. It has alio another Membrane, call'd its 

 Mufcular Membrane^ which is laid to contract and draw 

 together the Nollrils. 



The Os Cr'- ^^ ^^'^ upper Part of the Nofe is feated 



brifonne. ^^ ^^ Cribrifor?ne, or Sieve-like Bone, 



which is perforated in many Places, that the 

 fmall Twigs, which fpring from the Mamillary Procefles, 

 may have a free Paflage thro' it into the Infide of the 

 Nofe, ferving there to be the immediate Organs of Smelling. 



As the Ear is form'd in fuch manner as to coUedt and ga- 

 ther together all Sounds into its Cavity, fo the Nofe is like- 

 wife adapted to gather into it all Smells ; which Scnfation 

 is peiform'd in this manner : The Effluvia^ M'hich fly oft' 

 from all odoriferous Bodies, being carried in the circumam- 

 bient Air, are communicated to all Creatures as foon as they 

 draw in their Breath at the Noftrils ; but more to a Horfe 

 than to many others, by reafon he fucks in moft of his 

 Breath that way. As foon as thefe Effluvia^ or odoriferous 

 Particles are got within th«; Nofe, thole little Branches of 

 the Olfat'tory Nerves, \\'hich are fpread all over its infide, 

 are immediately aft'eded therewith, and immediately com- 

 municate that Senfation, whether it be grateful or unplea- 

 fant, to the common Senfory, where it is dillinguifli'd. 

 J jj. Thus the Nofe is not only ufeful, as it 



■' ' helps all Creatures to diltingui'fh that which 



is proper for their Food^ from that which may be hurtful 

 to them, as it is the chief Inflrument of that Inilindt ; but 

 it is alfo ufefu! to difcharge a great deal of E.xcrements 

 from the Blood. 



^be Mouth ^^^ come now to the Mouth, which is the 



hfl Thing to be confider'd under this Di- 

 vifion ; and is generally divided into that which is call'd 

 External, and that which is term'd Internal. 

 tj-j^^ J-. The Lips are its external or outward 



^ ' . Parts, which are alfo divided into the upper 

 and under : Thefe are compofed of a foft, fungous Sub- 

 * - Itance, 



