HISTGRY OF PLANTS: GOL 
Trees and shrubs seem to stiffer more in a cold 
climate than any other, because their perennial stem 
reaches far out of ground, and therefore is more ex- 
posed to the changes of the weather. Some which | 
are natives of warmer climates have, it is true, ac- 
customed themselves to our climate, perhaps be- 
cause their cellular texture is more tenacious than 
that of other plants; many more plants, however, 
are unfit for subsistence in our climate, as their or- 
ganization is not capable of suffering great changes 
of climate. 
The most useful plants, however, have, like do- 
_mestic animals, the peculiar property of agreeing 
with different climates; but if they are confined to 
certain climates, then others are found in other cli- 
‘mates which serve the same purpose; Under the 
equator and the tropics, in all parts of our globe, the 
different species of corn cannot grow in a flat coun- 
try. But then they possess rice, (Oryza sativa) 3 
indian corn, (Holcus Sorghum); and mays, (Zea 
Mays); which they use in place of our corn. In 
Iceland and Greenland, on the contrary, neither ours 
nor the just mentioned species of corn from under 
the tropics, will grow. But then they have the 
_ Elymus arenarius in great quantities, which serves, 
if necessity requires it, fof corn. 
Eatable roots and greens never fail in any cli- 
mate. Many grow wild in our country, of which 
we make no use, but which necessity would teach 
us to use, had we not got the oriental garden stuffs. 
Our culinary plants, (§ 357), so easily accomodate 
; Ce themselves 
