s 1 4 V f get abl e Static ks . 
The fap begins to rife fooner in the morn- 
ing in cool weather, than after hot days* 
the reafon of which may be, becaufe in 
hot weather much being evaporated, it is 
not fo foon fupplied by the roots as in cool 
weather, when lefs is evaporated. 
In a prime bleeding feafon I fix’d a tube 
25 feet long to a thriving branch two years 
old, and two feet from the ground, where 
it was cut off; the fap flowed fo briskly, 
as in 2 hours to flow over the top of the 
tube, which was 7 feet above the top of 
the Vine 5 and doubtlefs would have rifen 
higher, if I had been prepared to lengthen 
the tube. 
When at the diftance of four or five 
days, tubes were affixed to two different 
branches, which came from the fame ftem, 
the fap would rife higheft in that which 
was laft fixed $ yet if in the fixing the fe- 
cond tube there was much fap loft, the fap 
would fubfide in the firft tube 5 but they 
would not afterwards have their fap in e- 
quilibrio ; i . e. the furface of the fap in each 
was at very unequal heights ; the reafon of 
which is, becaufe of the difficulty with 
which the fap paffes thro’ the almoft fatu- 
rate and contracted Capillaries of {he firft cut 
ftem. Ill 
