a ee a a a i eee i eee 
Review of Darwin’s Theory on the Origin of Species. 173 
wey Bee 
“When wa look at the plants and bushes clothing an entangled bank, 
We are tempted to attribute their proportional numbers and kinds to what 
we call chance. But how false a view is this! Every one has heard 
that when an American forest is cut down, a very different ri pier 
the 
o 
rn and animals which have determined, in the course of centuries, 
-" Proportional numbers and kinds of trees now growing on the old In- 
dian ruiug !"—pp 4 "5. F 
. 74, 
its greater congener, &c.: and this, when duly consid- 
ral oj Y great diversification of structure, is seen under many natu- 
to eucumstanees, In an extremely small area, especially if freely open 
mmigration, and where the contest between individual and individual 
«ust be severe, we always find great diversity in its inhabitants. For 
tonne! found that a piece of turf, three feet by four in size, which had 
trons Posed for many years to exactly the same conditions, supported 
‘wenty species of plants, and these belonged to eighteen genera and to 
