j Vegetable Statich. 1 3 1 
i which are mofl: cxpofed to the Sun, as the 
bark is. 
I And when we confider, that the fap vef- 
[ fels are fo very fine, as to reduce the fap al- 
I mofl: to a vapour, before it can enter them, 
I the Sun’s warmth on the bark fhould mofl 
eafily difpofe fuch rarified fap to afcend> 
I inflead of ddcending. 
Experiment XLV. 
July 27th, I took feveral branches of Cur- 
ransy Vines ^ Cherry y Apple y Tear and Tlum- 
trecy and fet the great ends of each in veflels 
of water Xy (Fig. 31.) but firfl took the bark 
for an inch off one of the branches, as at 2;, 
to try whether the leaves above ^ at ^ 
would continue green longer than the leaves 
of any of the other branches ay Cy d ^ but I 
could find no difference, the leaves wither- 
ing all at the fame time : Now, if the re- 
turn of the fap was flopped at Zy then it 
would be expefted, that the leaves at b fhould 
continue green, longer than thofe on the o- 
ther branches, which did not happen, neither 
was there any moiflure at 
K 2 Ex PE- 
