The VEGETABLE SYSTEM. 23 
There will be a place in the courfe of this work, to examine that 
encreafe ; and fee how much of it is owing to heat and other caufes : 
for when we (hall come to treat Plants in the method of Nature, it is 
from this northern point, and this mod fimple date, we are to trace 
them : A few fliort obfervations only can be admitted here, to lead the 
way to a belief of that mod certain fadt, that America and the other 
parts of the world, have fome Plants in common. 
In the Latitude of 83, which is as far as men have failed, we find 
Modes only ; the Conferva in the waters ; the Ulva in the boggs ; 
the Coralloide Modes on dry land ; thefe are the dmpled of all Plants ; 
and thefe only are found at that extream North didance, whatever be 
the country. 
I have not had the opportunities for an exadd refearch, which are 
now offered, nor indeed has any; but what I know from faithful corref- 
pondents hitherto, is this. 
In the Latitude of 82, which is but a very fmall advance from 
that mod Northern part juft mentioned, are found Strawberries. They 
are found every where round the Pole at this diftance. 
But this is not all : there are many other Plants which take in larger 
circles, at more diftance, and yet' are equally, and as certainly univer- 
fal: The common Violet is found on the coads of Baffins Bay, in 
Greenland, in Nova Zembla, and in Mufcovitic Tartary, in the La- 
titude of 76. This is a Circle, in all parts of which, I doubt nor, 
Violets are found, as we fee them in fo many places there, and thofe fo 
diftant. 
I have received our common Moufe-Ear from Cumberland Ifle, 
from Greenland, Lapland, North Cape, and Siberia ; upon examination, 
all thefe places lie in the Latitude 73 ; and it is hence reafonable to con- 
clude, that this Plant is alfo univerfal at that diftance from the Pole. 
Farther than this, my opportunities of perfonal enquiry have not 
enabled me to determine; but even upon this foundation, that the 
Plants, 
