Part IL i7t the Creation. 277 



" left it fhould defcend too faft into the ^ugu- 

 " lars. The hke has been taken notice of by 

 ** Dr. Lower in the vertebral Sijtuss. The fple- 

 " nick Vein has divers Cells opening into it near 

 " its Extremities in human Bodies, but in Qua- 

 " drupeds the Cells open into the Trunks of the 

 " fplenick Veins. 



" Thtjpermatick Veins do more than equal the 

 " ^Length of the Arteries of the l^ejies m Men ; 

 " their various Divifions, and feveral Inofcula- 

 " tions, and their Valves, are admirably contri- 

 " ved to fufpend the Weight of the Blood, in or- 

 " der to difcharge it into the larger Trunks of 

 " the Veins-, and were it not that the refluent 

 " Blood from the Tejies is a Po?idus to the influ- 

 " ent Blood from the Arteries, and ftill lellens 

 " its Current in the Tejies, thefe fpermatick Veins, 

 " like thofe of other Parts, might have difcharg'd 

 " the Blood into the next adjacent Trunk. 



" Who can avoid Surprize at the Art of Na- 

 " ture, in contriving the Veins that bring part of 

 ** the refluent Blood from the lower Parts of the 

 " Body, when they confider the neceflity of pla- 

 " cing the human Heart, as well as that of moft 

 " Quadrupeds, fo far from the Center of the 

 " Body towards its upper Part; it is for chat 

 " End neceflfary that the large Trunks of the 

 " Veins and Arteries {hould not afl!bciate each 

 " other; for if all the Blood fent to the lower 

 " Parts by the defcending Trunk of the Aorta^ 

 " fhould return to the Heart again by one fingle 

 " Trunk (as it is fent out from thence) the- 



T 3 " Weight 



