48 
H(efHafiatich 
Experiment IX. 
I. T Slit open with a Pair of Sciflbrs, frotil 
X end to end, the Guts of a Dog, on 
that fide which was oppofite to the Infertion 
of the mefcnterick Arteries and Veins j and 
having fixed a Tube Feet high to the 
defeending Aorta a little below the Heart, I 
poured blood warm Water thro' a Funnel in- 
to the Tube, which defeended thence into 
the Aortay with a Force equal to that, with 
which the Blood is there impelled by the 
Heart : This Water paflTed off thro' the Ori- 
fices of innumerable fmall capillary Veflels^ 
which were cut afunder thro' the whole 
Length of the flit Gut. But notwithftanding 
it was impelled with a Force equal to that of 
the arterial Blood in a live Dog, yet it did 
not fpout out in little diftind Streams, but 
only feemed to ouze out at the very fine Ori- 
fices of the Arteries, in the fame manner as 
the Blood does from the capillary Arteries of 
a Mufcle cut tranfverfely. 
2. Having provided a Pendulum which beat 
Seconds, and pouring in thro' the Tube 
known Qiiantities of warm Water^ I found 
that 
