Tulip poplar,
-- tree,
Tussock moth,

Ulmus americana,
-- campestris,
Umbrella pine, Japanese,
-- tree,

Value of plant study for children,
-- of tree and nature study,
-- of trees as health givers and moral uplifters,

Walnut,
--, black,
Wasteful lumbering,
Weeping willow tree,
Western catalpa,
Whale-oil soap,
White ash,
-- birch, European,
-- cedar,
-- elm,
-- flowering dogwood,
Whiteheart hickory,
White maple,
-- mulberry,
-- oak,
-- oak, swamp,
-- or gray birch,
-- pine,
-- pine weevil,
-- poplar,
-- spruce,
Whitewood,
Willow, weeping,
--, pussy,
Wood, diffuse-porous,
--, diseased, disposal of,
--, early,
-- fibers,
--, how to identify specimens,
--, how to judge quality of,
--, late,
-- medullary rays,
-- parenchyma,
-- resin ducts,
--, ring-porous,
-- spring,
--, structure, of,
-- summer,
Woodland, care of the,
-- how to improve by removing trees,
-- how to judge, unfavorable conditions,
-- trees,
Woodlands, other means of protecting,
Woodlot, small cost of well-selected young trees for the,
Wood, structure of,
Wooded areas improved by planting new trees,
-- areas, preserving soil of,
Woods, identification, properties and uses of common,
--, ring-porous,
-- with large and conspicuous rays,
-- with pores,
-- with resin ducts,
-- with small and inconspicuous rays,
-- without pores,
-- without resin ducts,
Wounds, importance of covering,
--, methods of covering,
--, treating surface,

Xerophytes,

Yellow birch,
-- locust,
-- oak,
-- poplar,
Yew, English,
Yew trees,
Young trees for the woodlot, small cost of well-selected,

End of Project Gutenberg's Studies of Trees, by Jacob Joshua Levison

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