Of Vegetation . 3 5 j 
with that of the top, then are the afpirings 
of the top branches greatly checked. And 
the cafe is the fame in raoft other vegetables, 
which when they (land thick together, grow 
much in length with very weak lateral Shoots J 
And as the leaves are thus fervieeable in 
promoting the growth of a tree, we may ob- 
ferve that nature has placed the pedals of 
the leaves-ftalks where rnoft nourishment is 
wanting, to produce leaves, fhoots and fruit; 
and fome fuch thin leafy cxpanfion is fone- 
ceffary for this purpofe, that nature provides 
fmall thin expanfions, which may be called 
primary leaves, that ferve to proted and 
draw nourishment to the young fhoot and 
leaf buds before the leaf itfelf is expanded. 
And herein we fee the admirable con- 
trivance of the Author of nature in adapting 
her different ways of conveying nourifh- 
ment to the different circumflances of her 
produ&ions. For in this embrio (late of the 
buds a fuitable provifion is made to bring 
nourifhment to them in a quantity fufficient 
for their then fmall demands: But when 
they are in fome degree increafcd and form- 
ed, a much greater quantity of nourishment 
is neceffary, in proportion to their greater 
increafe : Nature, that She may then no 
A a z longer 
