14 Of the Circulation of the Blood , 
Here alfo it may be obferved, that as the arteries are 
extended in length, they gradually leffen. And on the 
contrary, the veins increafe in their diameters as they 
approach the heart. 
Furthermore, from this fame artery D, another veflel 
may be feen branching out from N, from whence the 
blood flows to O, and there difcharges itfelf into the 
vein E. 
Raife your eye a little higher to P, where another 
fmall artery advances from the great one D, towards 
where it ciofes again with the vein E. 
Alfo obferve that about the letter R, another fmall 
velfel leads from the fame artery towards S, at which 
place the blood that flows both from the artery D and 
B, is joined, and from thence pour’d into the vein C. 
Somewhat higher, about T, advances a little blood- 
veffel, which is divided into two branches at V, fo that 
from thence two diftinct veileis may be feen ho difeharge 
themfelves into the vein E, at X and h. 
About the letter Y proceeds from the fame ar¬ 
tery D, another fmall veflel, which at Z branches out 
in two more minute veflels 3 the blood flowing through 
them towards a and b, where it is difeharged into the 
vein C. 
Not far from Y, about c, proceeds a fmall branch 
from the artery D, through which the blood alfo returns 
into the vein C, with which it joins at d. 
From the fame artery D rifes a minute branch e, f, 
which is feparated into two lefler branches at f, fending 
back the blood to the vein E, at g and h. 
If the fame artery be examined a little higher, another 
branch I k 3 , will be feen iflfuing from I, which is alfo 
divided at 1 into two others, that likewife difeharge them¬ 
felves into the vein E 3 at m and n, near 13 at o, are alfo 
two 
