schools and private institutions for the purpose of interesting them
    in the trees around their school and their homes.  The members of
    these clubs are each given the tree warden’s badge of authority and
    assigned to some special duty in the preservation of the local
    trees.  A plan of study and of outdoor trips is laid out for them by
    their director and at stated periods they are given illustrated
    lectures on trees and taken to the neighboring parks or woodlands.

INDEX

Acer negundo, —­ platanoides, —­ polymorphum, —­ pseudoplatanus, —­ rubrum, —­ saccharinum, —­ saccharum, Aesculus hippocastanum, —­ rubicunda, Ailing tree, how to tell an, Air, influence of, Alternate branched trees, American beech, —­ elm, —­ larch, —­ linden, Annual rings, Aphides or plant lice, Apple rust, Arbor-vita and red cedar, description of, —­ (northern white cedar), Arsenate of lead, Ash, wood, —­ black, —­ white, Ash-leaf maple, Aspen, large-toothed, —­, quaking, Austrian pine,

Bald cypress,
Balm of Gilead,
Balsam, fir,
—­, poplar,
Bark,
Bark, how to prevent splitting when removing branches,
—­ or trunk, trees told by their,
Bass-wood,
Bean, Indian,
Beech, American,
—­, blue, or hornbeam,
—­, copper,
—­, European,
—­ tree,
Beetle, elm leaf,
Betula alba,
—­ lutea,
—­ lenta,
—­ papyrifera,
—­ populifolia,
Bhotan pine,
Bigbud hickory,
Birch, black,
—­, European white,
—­ fungus rot,
—­, gray,
—­, paper,
—­, sweet,
—­ tree,
—­, white,
—­, yellow,
Bitternut hickory,
Black ash,
—­ birch,
—­ locust,
—­ oak,
—­ or sweet birch,
—­ spruce,
—­ walnut,
Blotches, leaf,
Blue beech, or hornbeam,
—­ spruce,
Bolting limbs,
Bordeaux mixture,
Borer, bronze-birch,
—­, hickory bark,
—­, linden,
—­, locust,
—­, sugar maple,
Boring insects,
Box-elder,
Bracing limbs, various methods of,
Bracket fungus,
Branches, dead and broken, removal of,
—­, how to prevent bark splitting when removing,
Broadleaf or “hardwoods,”
Bronze-birch borer,
Brooklyn, N.Y.,
Broom hickory,
Brown hickory,
Brown-tail moth,
Buckeye,
Butternut,
Buttonball,
Buttonwood,
By-products of forests, utilization of,

Cambium layer,
Camperdown elm,
Care in selecting trees suitable for the soil,
Carolina poplar,
Carpinus caroliniana,
Castanea dentata,
Catalpa speciosa,
Caterpillars,
Caterpillars, leaf-eating,
—­, spraying for,
Catkin,
Cattle grazing in forests a source of injury,
Cavities, fungous diseases attacking,
—­ how caused,
—­, manner of filling,
Cedar apple,
—­, white,
Celtis occidentalis,
Chamaecyparis thyoides,
Character building and trees,
Chestnut,