8o Vegetable Stattch. 
ther, fo as to let in air 5 to prevent which in- 
convenience, I further fecured the joynt 
with the cement of Bees-wax and Turpen- 
tine, binding a wet bladder over all. 
When the branch was thus fixed, I turned 
it downwards, and the glafs tube upwards, 
and then filled both tubes full of water •, 
upon which limmediately applied the end of 
my finger to clofe up the end of the fmall 
tube, and immerfed it as faft as I could into 
the glafs ciftern x, which was full of mer- 
cury and water. 
When the branch was now uppermofi, and 
placed as in this figure, then the lower end 
of the branch was immerfed 6 inches in 
water, viz, from r to /. 
Which water was imbibed by the branch, 
at its tranfverfe cut / j and as the water af- 
cended up the fap vefiels of the branch, 
fo the mercury afeended up the tube e z 
from the ciftern x 5 fo as in half an hour’s 
time the mercury was rifen 5 inches and 
high up to 43. 
And this height of the mercury did in 
fome meafure fhew the force with which the 
fap was imbibed, tho’ not near the whole 
force > for while the water was imbibing, 
4 the 
