
PLANT SOCIETIES 261 
some of the food. Then nearly fill the vessel with 
water. In these aquaria you can place elodea, the 
pond scum, and other water plants; but do not have 
them too crowded. With several of these aquaria and 
the window gardens you will have an opportunity of 
learning some interesting habits of plants. — 
While you can learn many interesting things about 
plants from window-garden societies, you should not 
be content with these mere glimpses of the habits and 
social life of plants. The best place to study plants is 
in their own homes; so improve every opportunity to 
visit the fields and woods, become acquainted with 
some of the flowers and trees, and especially to study 
their behaviour under different conditions and at dil- 
ferent seasons of the year. When the fields and woods 
cannot be visited, the parks and gardens will furnish 
many subjects from which you can read most inter- 
esting stories if you will only try to interpret the sign 
language by means of which the trees and flowers 
express to us their lives and work. 

