. Leaf, flower, and fruit of speckled alder 
. Compound leaf, flower, and berries of sweet elder 
. Flowers and compound leaf of smooth sumac.... . 
. Flowers, leaf, and berries of shad bush 
. Leaf and flower of round-leaved dogwood 
. Leaf and flower of mountain laurel 
. Leaf and flower of rhododendron 
. Leaf, flower, and fruit of New Jersey tea. 
. Leaf, flower, and fruit of witch-hazel 
. Leaf and flower of witch hobble 
. Leaf, flower, and fruit of nannyberry. 
. Leaf and fruit of highbush blueberry . 
. Leaf and fruit of barberry 
. Leaf, flower, and fruit of hazel nut 
. Leaf, flower, and fruit of cock spur thorn . 
. Leaf and fruit of bearberry 
. Leaf and flower of sage brush 
. Leaf and flower of birch leaf mahogany 
. Leaf, fruit, and flower of Western choke cherry 
. Cross-section of a ring porous wood (white ash), as 
LIST OF ILLUSTRATIONS 
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. Section of a non-porous coniferous wocd (sequoia), seen 
through a microscope 
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