Hcemajiatics. 13 
or more in a Minute : Whence we fee, that 
the Pulfe is weak and quick, when the Heart 
is fupplied with little Blood 5 which is . the 
Cafe in the Heftick Fevers, 
8. And the Diaftole of the Heart muft 
neceflarily be proportionably fmall 5 for if the 
Heart dilated as much, when a fmall Quan-i 
tity of Blood flowed into the Ventricle, as 
when a large Quantity entered, it muft then 
Gonfequently be filled partly with Air each 
Time, which would foon caufe the Death of 
the Animal. 
Experiment III. 
I. TN December I laid a common Field 
A Gate on the Ground, with fome Straw 
upon it, on which a white Mare was caft on 
her right Side, and in that Pofture bound 
fall to the Gate ; flic was fourteen Hands and 
three Inches high ; lean, tho* not to a great De- 
gree, and about ten or twelve Years old. This 
^hd the above-mentioned Horfe and Marc 
t?7ere to have becii killed, as being unfit for 
Service. 
2. Then laying open the left Jugular Vein, 
I fixed to that part of it which comes from 
the 
