380 MEMOIRS of the 
ot" heat, thrive 5 by which mechanifm provident nature fur- 
niHics us with a very various and different entertainment, and 
what is bell luited to each leafon, all the year round. 
As the heat of the feveral fealons affords us a different face 
of thinqs, io the feveral dillant climates fliew different fcenes 
of nature, and produi^lions of the earth : The hottcfl countries 
ordinarily yield the largeft and tallefl trees, and thofe too, in 
much greater variety than the colder ever do 5 even thofe 
plants, which are common to both, attain to a much greater 
bulk in the Southern than in the northern climates 3 nay there 
are feme regions fo bleak and chill, that they raife no vegeta- 
bles at all to any confiderable fize ; this we learn from Green- 
hud^ Iceland and other places of fuch like cold fituation, 
where no trees ever appear., and the very flirubs they afford 
are few, Irnall, and low. Again in warmer climates, and fuch 
as yield trees and the larger vegetables, if there happen a re- 
niiffion or diminution of the ufual heat, their produ;!T:ions will 
be impeded, and diminiflied in proportion 3 which is alio 
plainly evinced by a cold fummer 3 for tho' the heat may be 
fufficient to raife the vegetative matter into the lower plants, 
into cords, as wheat, barley, peafe and the like; and tho' we 
may have plenty of llrawberries, rasberries, currans, goosberries, 
and the fruits of fuch other vegetables, as are low and near the 
earth 3 yea, and a moderate flore of cherries, mulberries, plums, 
filberts, and Ibme others, that grow Ibmewhat higher, yet apples, 
pears, walnuts, and the productions of the taller trees are fewer, 
and thofe not {q kindly, fo thoroughly ripened, and brought to 
that perfection that they are at, in a more benign and warmer 
leaion. Nay, in fuch a cold fummer, even the lower fruits and 
grains have Ibme fliare in the common calamity; and fall /hort 
both in number and goodnels of what the hotter and kindlier 
fealons are wont to flievv us: As to our grapes, apricocs, peaches, 
neCiarins, and figs, being tranfplanted hither out of hotter cli- 
mates, it is the lels wonder if in fuch a cafe there be a general 
failure of them. 
Nor is the fun, nor the ordinary emiflion of the fubterraneous 
heat only, that promotes vegetation, but any other heat indiffe- 
rently , according to its power and intenfenefs, as we fee b^ our lloves, 
hot-beds, and the like : All heat is of a like kind; and wherever 
the lame caufe is, there will conftantly be the fame effect; there 
is a pioccdure in every part of nature, that is-perfeffly regular 
anc, geometrical, if we can but find it out; and the further our 
fearchcs carry us, the more fliall we have occafion to admire, and 
the better it will compcnfate our labour. An 
