Hcemajlatks. 67 
ly fecn thofe Veins, I have then alfo feen the 
extream capillary Arteries, pour at right An- 
gles their fingle Globules, into thofe much 
larger Veins; agreeable to what I faw in the 
injeded VeflTels in Expcr, XXL Numb. 8. 
9. Now by this means the Blood has a 
much freer Paflage thro* the Lungs, w^here 
it is requifite for it to move With much greater 
Velocity than in other parts of the Body. 
Whereas in fome if not all the Mufcles, by 
entering the finer capillary Veffels at right 
Angles its Velocity is much retarded. I have 
obferved that where a long capillary Artery 
branches off at an acute Angle, that there 
the Velocity of the Blood is many times 
greater, than where it branches off at right 
Angles, which plainly fliews the great De- 
gree of Retardation which the Blood fuff'ers by 
its pafling off at right Angles. And this Re- 
tardation, which was neceffary in order to 
prevent the Blood’s paffing too freely, muft be 
very confiderable, where it fucceffively paffes 
feveral times at right Angles, as in the Bowels, 
Urine and Gall-Bladders and other parts of 
the Body. On which account, as well as on 
account of the greater Length of the Arce- 
ries, a greater impelling Force was neceffary 
F 2, to 
