no Vi ? get able Statieks. 
had of z or 3 inches was always after fun* 
fet, which I fufped was principally occa- 
lioned by the fhrinking and contraction of 
the cement at b, as it grew cool. 
When the fun fhined hot upon the Vine, 
there was always a continued feries of air 
bubbles, conftantly afcending from the Item 
thro' the fap in the tube, in fo great plenty 
as to make a large froth on the top of the 
fap, which Ihews the great quantity of air 
which is drawn in thro' the roots and Item. 
From this Experiment we find a confide- 
rable energy in the root to pulh up fap in 
the bleeding feafon. 
This put me upon trying, whether I 
could find any proof of fuch an energy, 
when the bleeding feafon was over, in or- 
der to which. 
Experiment XXXV. 
July 4th at noon, I cut off within 3 in- 
ches of the ground, another Vine on a 
fouth afped, and fixed to it a tube 7 feet 
high, as in the foregoing Experiment : I 
filled the tube with water, which was im- 
bibed by the root the firft day, at the rate 
of a foot in an hour, but the next day much 
more ilowly, yet it was continually linking, 
1 fo 
