Of Vegetation. 323 



But when, on the other hand, the crude 

 watry part of the nutriment bears too great 

 a proportion to the more noble principles, 

 either in a too luxuriant ftate of a plant, or 

 when its roots are planted too deep, or it 

 ftands in too fhady 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 watry 

 ftate; and never comes to that degree of 

 maturity, which a due proportion cf the 

 more noble principles would bring it to, 



Thus we find in this, and every other 

 part of this beautiful fcene of things, when 

 we attentively confider them, that the great 

 Author of nature has admirably tempered 

 the condiment principles of natural bodies, 

 in fuch due proportions as might bed fit 

 them for the ftate and purpofes they were 

 intended for. 



It is very plain from many of the fore- 

 going Experiments and Obfervations, that 

 the leaves are very ferviceabie in this work 

 of vegetation, by being inftrumental in bring- 

 ing nourifhment from the lower parts, within 

 the reach of the attra&ion of the growing 

 fruit -5 which like young animals is furnifhed 



