FOREST TREES AND FOREST SCENERY 
usefulness. Useful material, however, 
was not the sole consideration. The 
cutting was intended also to improve 
the conditions of growth for the trees 
that remained standing, and to increase 
the proportion of the species that were 
most useful or desirable. Finally, by 
opening up the forest to a proper de- 
gree of sunlight, the way was prepared 
for the germination of seeds that might 
fall from the old trees, in order to pro- 
vide early for a new generation in the 
forest. 
It will be readily understood, I be- 
lieve, that in course of time such a 
forest would betray to the eye a cer- 
tain gradation in the sizes of the trees, 
and a fixed proportion in the number 
of those belonging to one or another 
species. To this extent the selection 
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