ON ENVIRONMENT 
are borne several nuts containing the seed of the 
plant. 
In the case of the cactus the thorns were thrown 
out to protect the plant itself from destruction, but 
in the case of the monkey-puzzle tree the animals 
threatened not the tree itself but its offspring—its 
nuts were so highly prized by the monkeys, and 
their number was so few, that it was forced to take 
protective measures to keep its seed out of the 
reach of enemies. 
From this we begin to see that each plant has 
its own family individuality, its own family 
personality. Some plants, in order to insure 
reproduction, produce hundreds or thousands of 
seeds, relying on the fact that in an over-supply 
a few will likely be saved and germinated; while 
other plants producing only a few seeds protect 
them with hard shells or bitter coverings, or, as in 
the case of the monkey-puzzle tree, with sharp 
spines which make access impossible. 
In the deep canyons of California’s mountains 
there grows a member of the lily family, the 
trillium. 
At the bottom of these canyons there are places 
where the sunshine strikes but one side. The 
flowers on the shady side of the canyons are larger, 
and the leaves of the plants are broader, and the 
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