$ 8 Vegetable Staticks. 
the cement of Bees-wax and Turpentine, 
binding a wet bladder over all. If the hard 
cement be made of powder’d chalk inftead 
of brick-duft, it is more binding, and is not 
fo apt to be loofened by water. 
When the branch was thus fixed, I turned 
it downwards, and the glafs tube upwards, 
and then filled both tubes full of water 5 
upon which I immediately applied the end 
of my- finger to clofe up the end of the 
fmali tube, and immerfed it as faft as I could 
into the glafs ciftern x, which was full of 
mercury and water. 
When the branch was now uppermoft, 
and placed as in this figure, then the lower 
end of the branch was immerfed 6 inches 
in water, viz. from r to i. 
Which water was imbibed by the branch, 
at its tranfverfe cut / 5 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 ; fo as in half an hour’s time 
the mercury was rifen 5 inches and % high 
up to z. 
And this height of the mercury did in 
feme meafure fhew the force with which the 
fap was imbibed, tho’ not near the whole 
force $ for-, while the water was imbibing, 
the 
