The Anatomy of a HORSE. loi 



The Chyle being thus prepar'd in the Stomach, pafTes 

 by Degrees out at its lower Orifice into the fmall Guts, and 

 is by the fame Powers fqueez'd into the fmall and minute 

 Orifices of the lacteal or milky Veins ; which, as has been 

 obferved in another Place, arife from all Parts of the 

 faid Guts, by fine capillary, or Hair-like j^^ ^^^ .^^^ 

 Tubes : And altho' thefe Tubes are fo fmall ^^^ fmall Guts 

 that they cannot be perceived but in Animals 

 open'd alive immediately after Eating, at which Time they 

 are full of Chyle ; yet every one of them imbibe and drink 

 up Part of the refined Aliment ; and as they run from ths 

 Sides of the Guts to the Glands in the Mefentery, they unite 

 and form larger Branches, and are call'd the la^eal Vejfih 

 of the firll Kind. Thefe Extremities of the La5leah hav- 

 ing Communication with the fmall capillary Arteries of the 

 Guts, receive a thin Lympha^ which not only dilutes the 

 Chyle, and helps to drive it forwards, but alio walhes the 

 La5leah and Kernels^ that they may not furr and be flop- 

 ped up by its (laying in them upon failing. 



There are other La^eals^ which are larger, q-j i^aaeah ' 

 and are called Vence La^e<e fecundi generis^ 

 or the Ladleals of the fccond Kind : Thefe receive the 

 Chyle that was difcharged by the firil, into the veficular 

 Kernels of the Mefentery, and carry it immediately intd 

 its common Receptacle. 



The LymphatickSy which arife from moft of the In- 

 teftines of the Lower Belly, and from the lower extreme 

 Parts, empty their Liquor into that Receptacle, which 

 being mixed with it, makes its Parts flill more fine, and 

 fit to be united with the Blood ; and as the Chyle leaves 

 its Receptacle, and afcends the Thoraick Dud, the other 

 Lymphaticks, which arife from the Parts contained in the 

 Cheil, empty themfelves into the Duct, and thofe which 

 come from the Head, Neck, and Arm?, difcharge their 

 Contents into the Jugular and Subclavian Veins, by which 

 it becomes yet more diluted and perfed, as it enters into 

 the Mafs of Blood. 



The Ladeals and Thoraick Dud have 'The Thoraick 

 Valvesj which open for the Paflage of the ^«^ ^"^ ^^^^ 

 Chyle, but fhut themfelves fo as to hinder ^7 ^'''^' 

 its Return back again ; and the Thoraick ^'^^J^'^ ^^^fj^^ 

 Dudl, being placed behind the great Artery, of the ChyleT 

 receives a new Impetus by its Pulfation, "^ 

 which alio forwards the Afcent of the Chvle. The Lymph 



n I ' Duds 



