THE TREE TOPS 



65 



Heads may be narrow, 

 wide, flat, symmetrical, 

 irregular or broken. 



139. The general leaf- 

 age or furnishing of the 

 top is different for each 

 kind. The top may be 

 dense or thin. The foliage 

 may be heavy, light, large, 

 small. Compare maples 

 and elms, apples and 

 peaches, and other trees. 



140. The trunk or bole 

 of the tree is one of its 

 most conspicuous fea- 

 tures. Observe the strict 



113. The unbranched trunks of palms. straight trunk of the 



palm (Fig. 113), and the forking trunk of elms and maples. 

 Observe that no two trees have trunks quite alike. The bark 

 is different for each kind of plant. 



114. The plant form in winter. Russian thistle. 115. A plant form. Cotton. 



141. Plants awaken certain thoughts or feelings: they 

 are said to have expression. This expression is the source 

 of much of our pleasure in them. Trees are particularly 

 expressive. One suggests restfulness, because of its deep, 



