Hamajiatics. 3 1 
4. The Area of the tranh^erfe Sedion of 
the Aorta of this Doe =0.476 of thedefeend- 
Aorta of the amending —0.246, 
and that of the pulmonary Artery — 0.502. 
But it being not ea(y to obtain, in that timo- 
rous Creature, the juft Number of Pulfes in a 
Minute; I could not calculate the Velocity of 
the Blood) nor the Quantity that paffes in a- 
ny determinate time. 
Experiment VII. 
j.T Fixed Tubes alfo in the fame manner 
J- to the jugular Vein and carotid Arte- 
ry of (everal Dogs ; for whatever Experiment 
I principally intended to make on any Dog, 
I ufually began with fixing a Tube firft to the 
jugular Vein, and then to., the carotid Arte- 
ry, which was the Method I ufed to wafli 
the Blood out of the capillary Vefiels, there- 
by the better to prepare them for my intend- 
ed Experiments. 
2. The Force of the Blood in the Veins 
and Arteries is very different, not only in 
Animals of different Species, but alfo in Ani- 
mals of the fame kind, and that not only in 
thofe of different Sizes and Weights, but alfo 
in Dogs of the fame Size and Weight 5 and 
even 
