it is not
liable to warp and twist. It is also largely used for flooring, for
rollers for wringers and mangling machines, for which there is a large
and increasing demand. The peculiarity known as "bird's eye," and
which causes a difficulty in working the wood smooth, owing to the
little pieces like knots lifting up, is supposed to be due to the
action of boring insects. Its resistance to compression across the
grain is higher than that of most other woods. Ranges from Maine to
Minnesota, abundant, with birch, in the region of the Great Lakes.

=58. Red Maple= (_Acer rubrum_) (Swamp Maple, Soft Maple, Water Maple).
Medium-sized tree. Like the preceding but not so valuable. Scattered
along water-courses and other moist localities. Abundant. Maine to
Minnesota, southward to northern Florida.

=59. Silver Maple= (_Acer saccharinum_) (Soft Maple, White Maple,
Silver-Leaved Maple). Medium- to large-sized tree, common. Wood
lighter, softer, and inferior to _Acer saccharum_, and usually offered
in small quantities and held separate in the markets. Heartwood
reddish brown, sapwood ivory white, fine-grained, compact structure.
Fibres sometimes twisted, weaved, or curly. Not durable. Used in
cooperage for woodenware, turnery articles, interior decorations and
flooring. Valley of the Ohio, but occurs from Maine to Dakota and
southward to Florida.

=60. Broad-Leaved Maple= (_Acer macrophyllum_) (Oregon Maple).
Medium-sized tree, forms considerable forests, and, like the preceding
has a lighter, softer, and less valuable wood than _Acer saccharum_.
Pacific Coast regions.

=61. Mountain Maple= (_Acer spicatum_). Small-sized tree. Heartwood pale
reddish brown, sapwood lighter color. Wood light, soft, close-grained,
and susceptible of high polish. Ranges from lower St. Lawrence River
to northern Minnesota and regions of the Saskatchewan River; south
through the Northern States and along the Appalachian Mountains to
Georgia.

=62. Ash-Leaved Maple= (_Acer negundo_) (Box Elder). Medium- to
large-sized tree. Heartwood creamy white, sapwood nearly white. Wood
light, soft, close-grained, not strong. Used for woodenware and paper
pulp. Distributed across the continent, abundant throughout the
Mississippi Valley along banks of streams and borders of swamps.

=63. Striped Maple= (_Acer Pennsylvanicum_) (Moose-wood). Small-sized
tree. Produces a very white wood much sought after for inlaid and for
cabinet work. Wood is light, soft, clos