64 



The chief 

 Dillribu- 

 tion of the 

 Arteiics. 



The Arte- 

 ries and 

 Veins ac- 

 company 

 one ano- 

 ther for the 

 moft part 

 thro' the 

 iJo<ly. 



A Vein de- 

 fcritei. 



The Jrt of Farriery 



operating alternately, the Heart and Fibres of the 

 Arteries, keep the Blood in a continual Motion. 



The chief Diftribution of the Arteries is into the 

 Aorta Afcendens and the Aorta Defcendens, from 

 which they are branched, like a Tree, into the 

 feveral Parts of the Body. 



I fhall not trouble the Reader with a particular 

 Account of the Ramifications or Branchings out of 

 the Arteries from the Aorta, under this Chapter j but 

 rather choofe to give an Account of the moft confi- 

 derable of them, as they fall in my Way, when I 

 come to treat of the Diilempers which require 

 Manual Operation. And I judge this as the better 

 Method; becaufe Farriers, when they are obliged 

 to perform any Operation, may, under fuch Heads, 

 at once fee what Hazard they run of wounding an 

 Artery. Therefore I fhall now proceed to fhew 

 the Difference between an Artery and a Vein. 



The Arteries are moftly accompanied by Veins ; 

 that is, wherever a Vein is opened, you are to con- 

 iider an Artery, as big as the Vein, is near at 

 Hand. And although Nature has indeed (with her 

 ufual CEconomy) very well guarded the Arteries 

 againft the blundering Operator, by placing them 

 de^er, or more hardly to be come at, than the 

 Veins ; yet every one muft Jiave heard what terri- 

 ble and dangerous Confequences have befallen thofe 

 Creatures, whether Human or Brute, who have 

 had the Misfortune to have an Artery cut ^dy Acci- 

 dent, or otherwife. 



The Veins are only a Continuation of the ex- 

 treme Capillary Arteries reflefted back again to- 

 ward the Heart ; and uniting their Channels as 

 they approach it, till at laft they all f^rm three 

 large Veins ; ^'iz. the Ve7ia ca'va dtjcinde,.i or de- 

 fcending Hollow- Vein, which brings the Blood 

 back from all the Parts above the Heart ; and' the 

 Ca'va afcrj'dens, which brings the Blood from all 

 the Parts below the Heart; and th'- y-nn- Porta, 

 which carries the Blood to the J The Coat^ 



of 



