Of l^egetatiGH. 323 
But when, on the other hand, the crude 
wa try part of the nutriment bears too great 
a proportion to the more noble principles, 
cither in a too luxuriant ftate of a plant, or 
when its roots are planted too deep, or it 
(lands in too Ihady a pofition, or in a very 
cold and wet fummer 5 then it is found, 
that either no fruit is produced, or if there 
be any, yet it continues in a crude watiy 
(late ; and never comes to that degree of 
maturity, which a due proportion of the 
more noble principles would bring it to. 
Thus we find in this, and every other 
part of this beautiful feene of things, when 
we attentively confider them, that the great 
Author of nature has admirably tempered 
the conftituent principles of natural bodies, 
in fuch due proportions as might bed fit 
them for the (late and purpofes they were 
intended for. 
It is very plain from many of the fore- 
going Experiments and Obfefvations, that 
the leaves arc very ferviceable in this work 
of vegetation, by being inftrumental in bring- 
ing nourifiiment from the lower parts, within 
the reach of the attradion of the growing 
fruit I which like young animals is furnillied 
Y with 
