Vegetable Statkks. 1 4 1 
ing only a few fmall ones to draw up the 
fap. 
The inftance of the Ilex grafted upon the 
Englijh Oak, feems to afford a very con- 
liderable argument againft a circulation. For 
if there were a free uniform circulation of 
the fap thro' the Oak and Ilex, why fhould 
the leaves of the Oak fall in winter, and not 
thofe of the Ilex ? 
Another argument, againft a uniform cir- 
culation of the fap in trees as in animals, 
may be drawn from Exper. 37. where it 
was found by the three mercurial gages fixt 
to the fame Vine, that while feme of its 
branches changed their ftate of protruding 
fap into a ftate of imbibing , others con- 
tinued protruding fap, one nine, and the 
other thirteen days longer. 
In the fecond Vol. of iAt. Lowthorp’% 
Abridgment of the Thilof. Tranjac. p. 70s. 
is recited an Experiment of Mr. Br other - 
ton’s, viz. A young Hazel », Fig. 27, was 
cut into the body axx z with a deep gafh 5 
the parts of the body below at z, and a- 
bove at x, were cleft upwards and down- 
wards, and thefplintersx.a by wedges were 
kept off from touching each other, or the 
4 reft 
