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They are among the most prized of trees for park and street planting, and nearly all of them become finely colored in autumn.

Sugar Maple

They are among the most prized of trees for park and street planting, and nearly all of them become…

Here is a representation of two seeds of the maple, with their wings. They always grow in this way, in pairs.

Maple Seeds

Here is a representation of two seeds of the maple, with their wings. They always grow in this way,…

The seeds of the Striped Maple, Acer pennsylvanicum, (Keeler, 1915).

Striped Maple seed

The seeds of the Striped Maple, Acer pennsylvanicum, (Keeler, 1915).

The seeds of the Mountain Maple, Acer spicatum, (Keeler, 1915).

Mountain Maple Seed

The seeds of the Mountain Maple, Acer spicatum, (Keeler, 1915).

The seeds of the Sugar Maple, Acer saccharum, (Keeler, 1915).

Sugar Maple seed

The seeds of the Sugar Maple, Acer saccharum, (Keeler, 1915).

The staminate flowers of the Silver Maple, Acer saccharinum, (Keeler, 1915).

Silver Maple Flower

The staminate flowers of the Silver Maple, Acer saccharinum, (Keeler, 1915).

The pistillate flowers of the Silver Maple, Acer saccharinum, (Keeler, 1915).

Silver Maple Flower

The pistillate flowers of the Silver Maple, Acer saccharinum, (Keeler, 1915).

The seeds of the Silver Maple, Acer saccharinum, (Keeler, 1915).

Silver Maple Seed

The seeds of the Silver Maple, Acer saccharinum, (Keeler, 1915).

The seeds of the Red Maple, Acer rubrum, (Keeler, 1915).

Red Maple Seed

The seeds of the Red Maple, Acer rubrum, (Keeler, 1915).

These are the seeds of the Box Elder, Acer negundo, (Keeler, 1915).

Box Elder Seeds

These are the seeds of the Box Elder, Acer negundo, (Keeler, 1915).

A newly germinated seed of the Red Maple, seed leaves, and the roots.

Red Maple Seedling

A newly germinated seed of the Red Maple, seed leaves, and the roots.

A more advanced seedling of the Red Maple,.

Red Maple Seedling

A more advanced seedling of the Red Maple,.

This shows the axillary buds on a twig of Red Maple, they are opposite like the leaves.

Red Maple Buds

This shows the axillary buds on a twig of Red Maple, they are opposite like the leaves.

A key or key-fruit (called by Botanists a Samara) is like an akene or nut, only it is winged. This is a pair of keys.

Key

A key or key-fruit (called by Botanists a Samara) is like an akene or nut, only it is winged. This is…

Embryo of Sugar Maple,(Gray, 1858).

Sugar Maple Embryo

Embryo of Sugar Maple,(Gray, 1858).

Place of the barricade, Ridgefield. This view is at the north end of the main street. It was taken from the spot where, traditions asserts, Arnold's horse was killed, which is on the west side of the street, near a maple-tree, about one hundred yards southwest of the house of Samuel Stebbins, Esq., seen on the right in the picture. While making this sketch an old man came along, and informed me that on the day after the battle himself and some other boys skinned Arnold's horse, and discovered nine bullet-holes in his side. The escape of the rider seemed miraculous.

Ridgefield

Place of the barricade, Ridgefield. This view is at the north end of the main street. It was taken from…

"A maple-tree, prob. so called from its pointed leaves. ex. Sugar maple"-Whitney, 1902

Acer

"A maple-tree, prob. so called from its pointed leaves. ex. Sugar maple"-Whitney, 1902

"A maple-tree, prob. so called from its pointed leaves. ex. Sugar maple"-Whitney, 1902

Acer

"A maple-tree, prob. so called from its pointed leaves. ex. Sugar maple"-Whitney, 1902

"A genus of moths, family Bombycidæ, established by Hubner in 1816."-Whitney, 1902

Maple-Worm

"A genus of moths, family Bombycidæ, established by Hubner in 1816."-Whitney, 1902

"The simplest kind of table was a round one with three legs. It is shown in the drinking scene painted on the wall of a wine shop at Pompeii, and is represented in the annexed woodcut. Tables, however, must usually have had four legs. For the houses of the opulent, tables were made of the most valuable and beautiful kinds of wood, especially of maple, or of the citrus of Africa, which was a species of cypress or juniper. As the table was not large, it was usual to place the disches and the various kinds of meat upon it, and then to bring it thus furnished to the place where the guests were reclining. On many occasions, indeed, each guest either had a small table to himself, or the company was divided into parties of two or three, with a seperate table for each party, as is distinctly represented in the cut under Symposium." — Smith, 1873

Mensa

"The simplest kind of table was a round one with three legs. It is shown in the drinking scene painted…

"The maple spot gall, so common on the leaves of the red maple, is made by the fungus-gnat of the order Diptera." — Davison, 1906

Maple spot gall

"The maple spot gall, so common on the leaves of the red maple, is made by the fungus-gnat of the order…

A frame of maple leaves.

Maple Leaf

A frame of maple leaves.

A class of trees belonging to the genus acer, containing about eighty species, all of which are confined to the north temperate zone.

Maple

A class of trees belonging to the genus acer, containing about eighty species, all of which are confined…

The name applied to a species of maple trees. It occurs in abundance in the western states, and is frequently called plane or buttonwood.

Sycamore

The name applied to a species of maple trees. It occurs in abundance in the western states, and is frequently…

A parlor, bedroom or sitting room table made out of maple.

Parlor Table

A parlor, bedroom or sitting room table made out of maple.

A parlor, bedroom or sitting room table made out of maple.

Parlor Table

A parlor, bedroom or sitting room table made out of maple.

A parlor, bedroom or sitting room table made out of maple.

Parlor Table

A parlor, bedroom or sitting room table made out of maple.

A parlor, bedroom or sitting room table made out of maple.

Parlor Table

A parlor, bedroom or sitting room table made out of maple.

A minute, two-winged fly, furnished with long anal filaments.

Cottony Maple Scale

A minute, two-winged fly, furnished with long anal filaments.

Embryo of Sugar Maple, cut through lengthwise and taken out of the seed.

Sugar Maple

Embryo of Sugar Maple, cut through lengthwise and taken out of the seed.

Whole embryo of Sugar Maple just beginning to grow.

Sugar Maple Embryo

Whole embryo of Sugar Maple just beginning to grow.

One of the pair of keys or winged fruits of Red Maple; the seed-bearing portion cut open to show the seed.

Red Maple

One of the pair of keys or winged fruits of Red Maple; the seed-bearing portion cut open to show the…

Seed enlarged, and divided to show the crumpled embryo which fills it.

Red Maple Seed

Seed enlarged, and divided to show the crumpled embryo which fills it.

Embryo taken out and partly opened.

Red Maple Embryo

Embryo taken out and partly opened.

Seedling with stem joints and pair of leaves.

Red Maple Seedling

Seedling with stem joints and pair of leaves.

Fruit of Silver Maple, Acer dasycarpum, of natural size, the seed-bearing portion divided to show seed.

Silver Maple Key

Fruit of Silver Maple, Acer dasycarpum, of natural size, the seed-bearing portion divided to show seed.

Embryo of the seed taken out.

Silver Maple seed

Embryo of the seed taken out.

Silver Maple seed open out, to show the thick cotyledons and the little plumule or bud between them.

Silver Maple Seed Open

Silver Maple seed open out, to show the thick cotyledons and the little plumule or bud between them.

Germination of Silver Maple, natural size; merely the base of the fruit, containing the seed, is shown.

Germination of Silver Maple

Germination of Silver Maple, natural size; merely the base of the fruit, containing the seed, is shown.

Red-Maple branch, with accessory buds placed side by side. The annular lines toward the base are scars of the bud-scales, and indicate the place of the winter-bud of the preceding year.

Red-Maple branch

Red-Maple branch, with accessory buds placed side by side. The annular lines toward the base are scars…

Seedling Maple, of the natural size; the root well supplied with root hairs, here large enough to be seen by the naked eye.

Maple Seedling

Seedling Maple, of the natural size; the root well supplied with root hairs, here large enough to be…

Lower end of Maple root magnified, the root seen just as root-hairs are beginning to for a little behind the tip.

End of Maple Root

Lower end of Maple root magnified, the root seen just as root-hairs are beginning to for a little behind…

Opposite leaves, in Red Maple.

Red Maple

Opposite leaves, in Red Maple.

Pair of samaras of Sugar Maple.

Sugar Maple

Pair of samaras of Sugar Maple.

Much magnified small portion of young root of a seedling Maple.

Maple

Much magnified small portion of young root of a seedling Maple.

Piece of a stem of Soft Maple, of a year old, cut crosswise and lengthwise.

Piece of Stem from a Soft Maple

Piece of a stem of Soft Maple, of a year old, cut crosswise and lengthwise.

Magnified view of surface of a bit of young Maple wood from which the bark has been torn away, showing the wood-cells and the bark-ends of medullary rays.

Bit of Young Maple Wood

Magnified view of surface of a bit of young Maple wood from which the bark has been torn away, showing…

A Red Maple seedling with next joint of stem and leaves apparent.

Maple Seedling

A Red Maple seedling with next joint of stem and leaves apparent.

A Red Maple seedling with parts full-grown and bud at apex for further growth.

Maple Seedling

A Red Maple seedling with parts full-grown and bud at apex for further growth.

A Silver Maple embryo, taken out of the husk; upper part of growing stem cut off.

Silver Maple Embryo

A Silver Maple embryo, taken out of the husk; upper part of growing stem cut off.

Cells of young root of a seedling Maple.

Maple

Cells of young root of a seedling Maple.

Surface of a young Maple wood from which the bark has been torn away, showing the bark (on the left) to beginning of pith (on the right), and a medullary ray extending from one to the other.

Maple

Surface of a young Maple wood from which the bark has been torn away, showing the bark (on the left)…

Cottony maple scale, Pulminaria innumerabilis, showing, at a, the female on a leaf and, at b, same on a twig.

Maple Scale

Cottony maple scale, Pulminaria innumerabilis, showing, at a, the female on a leaf and, at b, same on…

Dryocampa rubicunda species; pupa.

Rosy Maple Moth

Dryocampa rubicunda species; pupa.

Dryocampa rubicunda species; moth.

Rosy Maple Moth

Dryocampa rubicunda species; moth.

Geometric pattern for translation and rotation exercises.

Geometric Block Pattern 39

Geometric pattern for translation and rotation exercises.

Leaves - simple, opposite; edge lobed, with the lobes very finely sharply toothed. Outline - rounded in the lower half, three-lobed above with the hollows between the lobes sharp. Apex - of the lobes, slim and pointed. Base - more or less heart-shape. Bark - smooth, green, and peculiarly marked lengthwise with dark stripes. Flowers - large, yellowish-green. May, June. Fruit - with spreading pale-green wings, in long clusters. Found - in Canada, through the Northern Atlantic States, westward to Northeastern Minnesota, and along the Alleghany Mountains to Georgia. General Information - A small and slender tree or shrub, usually ten to twenty-five feet high. Acer, from a Latin word meaning sharp, because of the ancient use of the wood for spearheads and other weapons.

Genus Acer, L. (Maple)

Leaves - simple, opposite; edge lobed, with the lobes very finely sharply toothed. Outline - rounded…

Leaves - simple; opposite; edge lobed, with the lobes very sparingly and coarsely sharp-toothed or the lower pair entire. Outline - rounded, with three to five lobes, usually five, with the hollows between the lobes and between the coarse teeth rounded. Apex - of the lobes, pointed. Base - heart-shaped or nearly squared. Leaf - dark green above; slightly lighter beneath; smooth or somewhat downy on the ribs; closely resembling that of the introduced "Norway Maple" by lacking the latter's milky-juiced leaf-stem. Bark - light gray, usually smoothish when young, becoming rough and scaly. Flowers - yellow-green and very abundant. April, May. Fruit - greenish-yellow, smooth, drooping, on thread-like and hairy stems one to two inches long, with wings about one inch long, broad and slightly spreading. September. Found - from Southern Canada through the Northern States, southward along the Alleghany Mountains, and westward to Minnesota, Eastern Nebraska, and Eastern Texas. Its finest development is in the region of the Great Lakes. It grows in rich woods; often it forms "groves," sometimes extensive forests.

Genus Acer, L. (Maple)

Leaves - simple; opposite; edge lobed, with the lobes very sparingly and coarsely sharp-toothed or the…

Leaves - simple; opposite; edge lobed, with the lobes very sparingly and coarsely sharp-toothed or the lower pair entire. Outline - rounded, with three to five lobes, usually five, with the hollows between the lobes and between the coarse teeth rounded. Apex - of the lobes, pointed. Base - heart-shaped or nearly squared. Leaf - dark green above; slightly lighter beneath; smooth or somewhat downy on the ribs; when heart-shaped, sometimes with overlapping lobes. Seed-wings - set wide apart, but only slightly diverging. Bark - blackish. Flowers - yellow-green and very abundant. April, May. Fruit - greenish-yellow, smooth, drooping, on thread-like and hairy stems one to two inches long, with wings about one inch long, broad and slightly spreading. September. Found - chiefly along streams and in river bottoms, from Western Vermont to Missouri and Northern Alabama. General Information - A tree fifty to eight feet high or more; of very great value in many directions, - as a shade tree, for fuel, for interior finish and the making of furniture, for its ashes, which give large quantities of potash; especially for its sap, which yields the "maple sugar" of commerce. The yield of sugar by an average tree in one season from five to ten pounds.

Genus Acer, L. (Maple)

Leaves - simple; opposite; edge lobed, with the lobes very sparingly and coarsely sharp-toothed or the…

Leaves - simple; opposite; edge deeply lobed, with the lobes unequally notched and toothed. Outline - rounded, with five lobes (the lowest pair much the smallest), and with the hollows between the lobes pointed and usually extending half way to the base of the leaf. Apex - of lobes, pointed. Base - heart-shaped or nearly squared. Leaf - silvery white beneath; downy when young, becoming smooth. Flowers - yellowish-green; woolly when young, becoming nearly smooth; on stems about one inch long, with very large, wide-spreading wings (two to three inches long), one of which is often undeveloped. July, August. Found - widely distributed, but most common west of the Alleghany Mountains and southward. General Information - A tree thirty to fifty feet high, with soft, white wood of comparatively slight value.

Genus Acer, L. (Maple)

Leaves - simple; opposite; edge deeply lobed, with the lobes unequally notched and toothed. Outline…