I 
I Vegetahle Statich. 107 
I The greateft height of the mercury be, 
I ing 32 \ inches 5 the force of the fap 
i was then equal to feet 5 -j- t inches 
height of water. 
Here the force of the rifing fap in the mor- 
' ning is plainly owing to the energy of the 
root and ftem. In another like mercurial 
gage, (fixed near the bottom of a Vine which 
run 20 feet high) the mercury was raifed by 
the force of the fap 38 inches equal to 43 
feet 3 inches -j- f height of water. 
Which force is near five times greater than 
the force of the blood in the great crural ar* 
tery of a Horfe ; feven times greater than 
the force of the blood in the like artery of 
a Dog ; and eight times greater than the 
blood’s force in the fame artery of a fallow 
Doe: Which different forces I found by 
tying thofe feveral animals down alive upon 
their backs 5 and then laying open the great 
left crural artery, where it firft enters the 
thigh , I fixed to it (by means of two brafs 
pipes, which run one into the other ) a glafs 
tube of above ten feet long, and tth of an 
inch diameter in bore : In which tube the 
blood of one Horfe rofe eight feet, three in- 
ches, and the blood of another Horfe eight 
feet. 
