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Leaves - simple; alternate; edge deeply lobed (edges of lobes mostly entire, but notched and toothed towards the ends). Outline - broadly oval or broadly reverse egg-shape. Base - very short wedge-shape or squared. Ends of the lobes and of the teeth pointed and bristle-tipped. Leaf - four to eight inches long, bright green above, slightly lighter below; both surfaces smooth and shining. Lobes - five to nine, usually seven with the hollows rounded and very broad, and reaching about two thirds of the way to the middle rib. Most of the lobes widen and are deeply notched toward their end. Bark - of trunk, thick and rough, usually not quite as dark or as straight-furrowed as that of the Black Oak. The inner bark reddish. Acorns - variable. Cup - very thick, top-shaped, with large somewhat triangular egg-shaped, scales. Nut - one half to three fourths of an inch long; rounded or rounded egg-shape, about one third covered by the cup; kernel bitter and whitish. October. Found - from Southern Maine southward and westward; most common in the Middle and Southern States. General Information - A tree fifth to ninety feet high, with wood of less value than some of the other oaks. In the fall the leaves turn to a bright scarlet, or orange0scarlet, or crimson and red. They often cling throughout the winter. Quercus, possible from a Celtic word meaning to inquire, because it was among the oaks that the Druids oftenest practised their rites.

Genus Quercus, L. (Oak)

Leaves - simple; alternate; edge deeply lobed (edges of lobes mostly entire, but notched and toothed…

Leaves - simple; alternate; edge lobed (edge of the lobes mostly entire, but oftenest with a few teeth toward the end). Outline - reverse egg-shape or oval. Base - usually rounded. Ends of the lobes and of the few teeth, sharp and bristle-pointed, especially when young. Leaf - five to eight inches long; three to five inches wide; very variable. The two types, a and b, are often found on the same tree; b is a variation toward the leaf of the Scarlet Oak. The upper surface is roughish, becoming smoother when mature; the undersurface, rusty-downy until mid-summer, when the down mostly disappears, except from the angles of the ribs. Bark - of trunk, blackish and deeply and roughly furrowed, with an inner bark that is very thick and yellow and bitter. Acorns - variable; usually small; on short stems. Cups - thick; somewhat top-shaped; scales distinct and rather large. . Nut - one half to two thirds of an inch long; rounded; nearly one third covered by the cup. Kernel, bright yellow or orange and bitter. October. Found - from Southern Maine southward and westward. Very common, especially in the Atlantic forests. General Information - A tree fifty to a hundred feet high, with wood that is inferior to that of the White Oak. The yellow inner bark (quercitron of the shops) is a valuable dye, and is rich in tannin. Late in the autumn the leaves turn to a rich yellowish-brown or russet. It is very probable that the "Black Oak" and the "Scarlet Oak" ought to be considered as one, and described, not as species and variety, but as slightly different forms of the single species Q. coccinea. Though the most distinctive leaves of the "Black Oak" are easily recognized, often others are so nearly like those of the "Scarlet Oak" that it is not easy to distinguish between then; and the same is true of the fruit and the bark. Michaux f. says: "The only constant difference between the acorns of the Scarlet Oak and the Black Oak is in the kernel, which is white in the Scarlet Oak and yellow in the Black Oak." The Gray Oak (Q. c., ambigua, Gray) is a variety sometimes found along the northeastern boundary of the States (as far as Lake Champlain) and northward. It combines the foliage of the Red Oak with the acorn of the Scarlet Oak. Quercus, possible from a Celtic word meaning to inquire, because it was among the oaks that the Druids oftenest practised their rites.

Genus Quercus, L. (Oak)

Leaves - simple; alternate; edge lobed (edge of the lobes mostly entire, but oftenest with a few teeth…

Leaves simple; alternate; edge lobed (edges of the lobes mostly entire, but slightly toothed toward the ends). Outline - about oval. Base - short wedge-shape, or rounded. Ends of the lobes and of their one to three slight teeth, pointed and bristle-tipped. Leaf - six to nine inches long, three to five inches wide; both surfaces smooth. Lobes, nine to thirteen, usually very tapering from the base, with the hollows between them rounded and narrow and extending about half way to the middle rib. Bark - of trunk, dark, greenish-gray, and continuing smooth longer than on any other oak, never becoming as rough, for example, as that of the black oak. Acorns - large and stemless, or nearly so. Cup - flat saucer-shape, bulging, very shallow, nearly smooth, with small scales. Nut - about one inch long, somewhat egg-shape; bitter. October. Found - from Nova Scotia and New Brunswick westward and southward. Very common, especially at the North, and extending farther north than any other Atlantic oak. General Information - A tree fifty to eight feet high, with wood that at the East is porous and not durable (though often of better quality westward). It is used for clapboards and in cooperage. The leaves change in the fall to dark red. Quercus, possible from a Celtic word meaning to inquire, because it was among the oaks that the Druids oftenest practised their rites.

Genus Quercus, L. (Oak)

Leaves simple; alternate; edge lobed (edges of the lobes mostly entire, but slightly toothed toward…

Leaves - simple; alternate; edge deeply lobed (lobes finely and sharply toothed throughout). Outline - rounded. The lobes are five to seven, radiating from the base. Apex - of the lobes, pointed. Base - of the leaf heart-shape. Leaf - three to seven inches in diameter, smooth and shining with a pleasant odor when bruised. Ribs tufted at their angles. Bark - gray; usually strongly winged with corky ridges along the branchlets. In the South, a spicy gum, from which the tree takes its name, oozes from the bark. Fruit - small woody pods are collected into a round ball. These usually contain a few good seeds and a large number of others that resemble saw-dust. September. Found - from Connecticut to Illinois, and southward. It reaches its finest growth and is very common in the bottom lands of the Mississippi basin. General Information - A fine tree sixty to seventy feel high, or southward one hundred feet and more. The wood is valuable, and would be better appreciated except for the difficulty of seasoning it. It is sometimes used as a substitute for Black Walnut, Its gum is used medicinally.

Genus Liquidamber, L. (Sweet Bum)

Leaves - simple; alternate; edge deeply lobed (lobes finely and sharply toothed throughout). Outline…

Leaves - simple; opposite; edge closely and sharply toothed. Outline - egg-shape. Apex - pointed. Base - round. Quite variable. Leaf/Stem - winged on both sides with a wavy border; when young, sprinkled with brownish glands. Leaf - about three to four inches long, and half as wide or more; smooth. Flowers - white, in flat, stemless clusters. May, June. Fruit - one half inch long; oval; sweetish; red, becoming almost black when ripe; edible. Found - from Hudson's Bay through the Northern States, southward to Georgia. Common in swamps and rich, moist soil. General Information - A tree fifteen to twenty feet high, with hard, ill-smelling wood.

Genus Viburnum, L. (Haw and Viburnum)

Leaves - simple; opposite; edge closely and sharply toothed. Outline - egg-shape. Apex - pointed. Base…

Leaves - simple; indeterminate in position because of their closeness; arranged singly all around the branchlets. Leaf - needle-shaped, five twelfths to three fourths of an inch long, four-sided, curved, sharp, rather slender, bluish-green, much lighter than the leaf of the Black Spruce. Bark - lighter than that of the Black Spruce. Cones - one to two inches long, and always in the proportion of about two inches in length to one half or three fourths of an inch in thickness; drooping at the ends of the branchlets; long oval or cylinder-shape; pale green when young, becoming brownish as they ripen. Scales - broad reverse egg-shape, with an entire edge, and rounded or somewhat two-lobed at the apex. Found - in Maine, Northeastern Vermont, Northern Michigan, Minnesota, and far northward, on low ground and in swamps. It is most common north of the United States boundaries. General Information - An evergreen tree, forty to seventy feet high. One of the most important of the Northern timber trees.

Genus Picea, Link. (Spruce)

Leaves - simple; indeterminate in position because of their closeness; arranged singly all around the…

Leaves - simple; indeterminate in position because of their closeness; arranged singly all around the branchlets. Leaf - needle-shaped, five twelfths to three fourths of an inch long, four-sided, curved, sharp, rather slender, bluish-green, much lighter than the leaf of the Black Spruce. Bark - lighter than that of the Black Spruce. Cones - five inches and more in length; about one and a half inches in thickness. Branches and branchlets - heavily drooping, especially in the older trees. Scales - broad reverse egg-shape, with an entire edge, and rounded or somewhat two-lobed at the apex. General Information - This spruce is not a native, but is now very widely cultivated, and is sometimes found escaped from cultivation. It is a finer and large tree than the native spruces.

Genus Picea, Link. (Spruce)

Leaves - simple; indeterminate in position because of their closeness; arranged singly all around the…

Leaves - simple; indeterminate in position because of their smallness and closeness. They are arranged in four rows up and down the branchlets. In younger or rapidly growing sprouts the leaves are awl-shaped or needle-shaped, somewhat spreading from the branch, very sharp and stiff, placed in pairs (or sometimes in threes), usually about one fourth of an inch long, and with the fine branchlets, which they cover, rounded. In the older and slower-growing trees the leaves are scale-like and overlapping, egg-shape, closely pressed to the branchlets which they cover, and with the branchlets square. As the branchlets grow, the lower scales sometimes lengthen and become dry and chaffy and slightly spreading. Bark - brown and sometimes purplish-tinged, often shredding off with age and leaving the trunk smooth and polished. Berries - about the size of a small pea, closely placed along the branchlets, bluish, and covered with a whitish powder. Found - in Southern Canada, and distributed nearly throughout the United States - more widely than any other of the cone-bearing trees. General information - An evergreen tree, fifteen to thirty feet high (much larger at the South), usually pyramid-shaped, with a rounded base, but varying very greatly, especially near the coast, where it is often twisted and flattened into angular and weird forms. The wood is very valuable, light, straight-grained, durable, fragrant. It is largely used for posts, for cabinet-work, for interior finish, and almost exclusively in the making of lead pencils. The heart-wood is usually a dull red (whence the name), the sap-wood white. Among the most picturesque objects in the Turkish landscape, standing like sentinels, singly or in groups, and slender and upright as a Lombardy Poplar, are the black cypress trees (C. sempervirens). They mark the sites of graves, often of those which have long since disappeared. In America, more than any other northern tree, the red cedar gives the same sombre effect, whether growing wild or planted in cemeteries. The Common Juniper (J. communis, L.), common as a shrub, is occasionally found in tree form, low, with spreading or drooping branches, and with leaves resembling those of a young Red Cedar, awl-shaped and spreading, but arranged in threes instead of opposite.

Genus Juniperus, L. (Red Cedar)

Leaves - simple; indeterminate in position because of their smallness and closeness. They are arranged…

Leaves - compound (odd-feathered; leaflets, fifteen to seventeen); alternate; edge of leaflets sharp-toothed. Outline - of leaflet, long egg-shaped or long oval. Apex - taper-pointed. Base - rounded. Leaf/Stem - downy and sticky. Leaf - twelve to twenty inches long. Leaflet - three inches or more in length; downy, especially beneath. Bark - of the branches, light gray and smoothish. Twigs - as well as leaf-stems and fruit, very sticky. Fruit - long (two to three inches), pointed. Husk - very sticky; green at first; brown when ripe, becoming very dark; not splitting in sections. Nut - deeply and roughly furrowed and sharp-ridged, with a sweet oily kernel. September. Found - in Southern Canada, and common in New England and the Middle and Western States. General Information - A tree twenty to fifty feet high, with a short, stout trunk and very wide-reaching, horizontal branches. The heart-wood is reddish or light brown, not as dark nor as hard as in the Black Walnut. It is used for ornamental cabinet-work and interior finish.

Genus Juglans, L. (Walnut)

Leaves - compound (odd-feathered; leaflets, fifteen to seventeen); alternate; edge of leaflets sharp-toothed.…

Leaves - compound (odd-feathered; leaflets, seven to eleven, usually nine); opposite; edge of leaflet toothed. Outline - of leaflet, narrow, long oval or long egg-shaped Apex - taper-pointed. Base - rounded. Leaf/Stem - lacking. Leaf/Bud - deep blue or blackish. Leaflet - three to five inches long, smooth and green on both sides, excepting where it is slightly hairy along the lower part of the middle rib. When crushed it has an Elder-like odor. Bark - of trunk, dark granite-gray, somewhat furrowed and broken up and down with roughness, which continue in the old tree. The young branches are smooth and grayish and marked with black and white dots and warts. Winged seeds - nearly one and one half inches long, with the wing three eighths of an inch wide and extending around the seed. Ripe in July. Found - along low river-banks and in swamps, which it sometimes fills; in Delaware, the mountains of Virginia, Northwestern Arkansas, through the Northern States to Canada. It is the most Northern of the American Ashes. General Information - Usually a small or medium-sized tree. The wood is largely used for barrel-hoops, baskets, in cabinet-work, and interior finish. Fraxinus from a Greek word meaning "separation," because of the ease with which the wood of the Ash can be split. I find in the notes of an old copy of White's "Natural History of Selborne" this comment: "The Ash, I think, has been termed by Gilpin the Venus of British trees." Gerardes' "Herbal" comments: "The leaves of the Ash are of so great a vertue against serpents, as that the serpents dare not be so bolde as to touch the morning and evening shadowes of the tree, but shunneth them afarre off, as Pliny reporteth in his 16 book, 13 chap. He also affirmeth that the serpent being penned in with boughes laide rounde about, will sooner run into the fire, if any be there, than come neere to the boughes of the Ash." In Scandinavian mythology the great and sacred tree, Yggdrasil, the greatest and most sacred of all trees, which binds together heaven and earth and hell, is an Ash. Its roots spread over the whole earth. Its branches reach above the heavens. Underneath lies a serpent; above is an eagle; a squirrel runs up and down the trunk, trying to breed strife between them.

Genus Fraxinus, L. (Ash)

Leaves - compound (odd-feathered; leaflets, seven to eleven, usually nine); opposite; edge of leaflet…

(1803-1862) American soldier who fought in the Black Hawk War, the war for Texan independence, the Mexican War, and was killed at Shiloh in the Civil War where he was fighting for the Confederate army, commanding the forces in the west.

Albert Sidney Johnston

(1803-1862) American soldier who fought in the Black Hawk War, the war for Texan independence, the Mexican…

A red or sometimes yellow beetle with black spots.

Ladybug

A red or sometimes yellow beetle with black spots.

The plant from which the black pepper comes from.

Pepper

The plant from which the black pepper comes from.

An upright section of one of the papillae of the tongue very greatly magnified, and split open, to show the nerves (engraved white) and the blood-vessels (black).

Tongue Papillae Section

An upright section of one of the papillae of the tongue very greatly magnified, and split open, to show…

Shiny, black, oblong stone.

Tourmaline

Shiny, black, oblong stone.

The Black Eagle is a military decoration of Europe.

The Black Eagle

The Black Eagle is a military decoration of Europe.

A black birch leaf.

Black Birch Leaf

A black birch leaf.

A black walnut leaf.

Black Walnut Leaf

A black walnut leaf.

The leaf of a Black-jack oak tree.

Black-Jack Oak Leaf

The leaf of a Black-jack oak tree.

The leaf of a Black oak tree.

Black Oak Leaf

The leaf of a Black oak tree.

The leaves and fruit of the wild black cherry tree.

Wild Black Cherry

The leaves and fruit of the wild black cherry tree.

A fairy tale witch holding a broomstick with her cat.

Witch and Cat

A fairy tale witch holding a broomstick with her cat.

A fairy tale witch and her cat riding a broomstick.

Witch and Cat

A fairy tale witch and her cat riding a broomstick.

"Diagram to illustrate the form and relations of caverns developed by solution. The black spaces represent caverns. Some limestone sinks are represented at the surface where the roofs of caves have fallen in." -Salisbury, 1919

Cavern Formation

"Diagram to illustrate the form and relations of caverns developed by solution. The black spaces represent…

"A, embryonic cells from onion root tip; d, plasmatic membrane; c, cytoplasm; a, nuclear membrane enclosing the thread-like nuclear reticulum; b, nucleolus; e, plastids (black dots scattered about)." -Stevens, 1916

Onion Cells

"A, embryonic cells from onion root tip; d, plasmatic membrane; c, cytoplasm; a, nuclear membrane enclosing…

Third and final developmental stage of stone cells: "3, The walls are completed. The primary wall is black, cellulose additions white, and the lignified walls in 3 are stippled. Notice that the protoplasts have disappeared in 3, and the pits in some instances are branched." -Stevens, 1916

Stone Cells 3

Third and final developmental stage of stone cells: "3, The walls are completed. The primary wall is…

"Diagram showing by the arrows how the water can flow tangentially around a plant without traversing the medullary rays, which are indicated in black." -Stevens, 1916

Water Flow in Plants

"Diagram showing by the arrows how the water can flow tangentially around a plant without traversing…

"A, cross section of stem of Juncus...the black lines traversing the section are really chains of cells and thin-walled cells with relatively large intercellular spaces between them fill up i." -Stevens, 1916

Juncus Stem

"A, cross section of stem of Juncus...the black lines traversing the section are really chains of cells…

"Diagram showing the transport of food through the sieve tubes, medullary rays and tracheal tubes, and its storage in the parenchyma cells of the wood and bark. The black bodies in the cells indicate stored food." -Stevens, 1916

Sieve Tube Food Transportation

"Diagram showing the transport of food through the sieve tubes, medullary rays and tracheal tubes, and…

The black-capped chickadee.

Black-Capped Chickadee

The black-capped chickadee.

The black-and-white creeping warbler

Black-and-White Creeping Warbler

The black-and-white creeping warbler

The black-throated green warbler.

Black-Throated Green Warbler

The black-throated green warbler.

Of the mustard family (Cruciferae), the black mustard or Brassica nigra.

Black Mustard

Of the mustard family (Cruciferae), the black mustard or Brassica nigra.

Of the pulse family (Leguminosae), the leaf of the nonesuch or black medick (Medicago lupulina).

Nonesuch or Black Medick

Of the pulse family (Leguminosae), the leaf of the nonesuch or black medick (Medicago lupulina).

The silhouette of a sitting cat.

Cat Silhouette

The silhouette of a sitting cat.

A cat grinding coffee, from the story "How Cats Came to Purr."

Cat Grinding Coffee

A cat grinding coffee, from the story "How Cats Came to Purr."

A cat grinding coffee by order of his master, in the story "How Cats Came to Purr."

Cat and Mater

A cat grinding coffee by order of his master, in the story "How Cats Came to Purr."

A cat sitting solemnly as dogs dance down the hallway, in the story "How Cats Came to Purr."

Cat and Dancing Dogs

A cat sitting solemnly as dogs dance down the hallway, in the story "How Cats Came to Purr."

The silhouette illustration of the shocked cat after swallowing the coffee mill in the story, "How Cats Came to Purr."

Shocked Cat

The silhouette illustration of the shocked cat after swallowing the coffee mill in the story, "How Cats…

The silhouette illustration of the cat in "How Cats Came to Purr."

Sitting Cat

The silhouette illustration of the cat in "How Cats Came to Purr."

The silhouette illustration of the cat walking in "How Cats Came to Purr."

Walking Cat

The silhouette illustration of the cat walking in "How Cats Came to Purr."

The silhouette illustration of the man petting the cat walking in "How Cats Came to Purr."

Man Petting Cat

The silhouette illustration of the man petting the cat walking in "How Cats Came to Purr."

The silhouette illustration of the genie scaring the man and the cat in "How Cats Came to Purr."

Genie

The silhouette illustration of the genie scaring the man and the cat in "How Cats Came to Purr."

The silhouette illustration of the retired cat in "How Cats Came to Purr."

Retired Cat

The silhouette illustration of the retired cat in "How Cats Came to Purr."

"Lumbricus agricola. A, entire specimen, lateral view; B, ventral view of anterior portion of the body, magnified. 1, 15, 33, first, fifteenth, and thirty-third segments. The black dots represent the setae." -Parker, 1900

Lumbricus Agricola

"Lumbricus agricola. A, entire specimen, lateral view; B, ventral view of anterior portion of the body,…

"Diagrammatic horizontal section of the eye of man. c, cornea; ch. choroid (dotted); C. P, ciliary processes; e. c, epithelium of cornea; e. cj, conjunctiva; f. c, yellow spot; I, iris; L, lens; ON, optic nerve; OS, ora serrata; o-x, optic axis; p. c. R, anterior non-visual portion of retina; P. E, pigmented epithelium (black); R, retina; sp. l, suspensory ligament; Scl, sclerotic; V. H, vitreous body." -Parker, 1900

Human Eye

"Diagrammatic horizontal section of the eye of man. c, cornea; ch. choroid (dotted); C. P, ciliary processes;…

Of the Parsley family (Umbelliferae), the Maryland black snakeroot (Sanicula marilandica).

Maryland Black Snakeroot

Of the Parsley family (Umbelliferae), the Maryland black snakeroot (Sanicula marilandica).

Of the Primrose family (Primulaceae), the Glaux maritima.

Glaux

Of the Primrose family (Primulaceae), the Glaux maritima.

Of the Nightshade family (Solanaceae), the black nightshade (Solanum nigrum).

Black Nightshade

Of the Nightshade family (Solanaceae), the black nightshade (Solanum nigrum).

Of the plantain family (Plantaginaceae), the blackseed plantain (Plantago Rugelii).

Blackseed Plantain

Of the plantain family (Plantaginaceae), the blackseed plantain (Plantago Rugelii).

"An evergreen of the laurel family, having glossy leaves and bearing clusters of yellowish flowers, which are succeeded by branches of fruit resembling black currants." -Lupton

Camphor Tree

"An evergreen of the laurel family, having glossy leaves and bearing clusters of yellowish flowers,…

A very beautiful bird of Australia, belonging to the family Meliphagidae or honey-eaters. The color of the plumage is golden yellow and deep velvety black. It was discovered during the regency of George IV., and was named in compliment to him.

Regent Bird

A very beautiful bird of Australia, belonging to the family Meliphagidae or honey-eaters. The color…

(1767-1838) Native American Chief of the Sac and Fox tribes famous for his involvement in the War of 1812 and the Black Hawk War.

Black Hawk

(1767-1838) Native American Chief of the Sac and Fox tribes famous for his involvement in the War of…

"Diagram to illustrate the inferred structure in the vicinity of the "Triangle." Arkose conglomerate is represented by lines and ellipses, anterior basalt by the black areas, anterior shale by parallel lines, and main basalt by cross-hachure areas. The finer hachuring (and hence the deeper shade) corresponds to the higher blocks of the basalt." -Walcott, 1901

Basalt Diagram

"Diagram to illustrate the inferred structure in the vicinity of the "Triangle." Arkose conglomerate…

A genus of eels, family Murraenidae. It inhabits the depths of the Atlantic, is of a perfectly black color, is sometimes 9 feet in length, but seldom met with.

Saccopharynx

A genus of eels, family Murraenidae. It inhabits the depths of the Atlantic, is of a perfectly black…

Front half of a caterpillar. Labels: a, opening air tubes, a pair of which are shown in black at the cut end.

Front Half of a Caterpillar

Front half of a caterpillar. Labels: a, opening air tubes, a pair of which are shown in black at the…

"Generalized columnar section, northern Black Hills." -Walcott, 1901

Strata Thickness

"Generalized columnar section, northern Black Hills." -Walcott, 1901

From the southeast, a man views Devils Tower or Mato Teepee, a national monument in Wyoming.

Devils Tower

From the southeast, a man views Devils Tower or Mato Teepee, a national monument in Wyoming.

"Cell of Pellionia Daveauana, showing starch-grains. The black, crescent-shaped body on the end of each grain is the amyloplast." -Gager, 1916

Pellionia Plant Cell

"Cell of Pellionia Daveauana, showing starch-grains. The black, crescent-shaped body on the end of each…

The circulation of the blood in the web of a frog's foot. A, an artery; B, capillaries crowded with disks, owing to a rupture just above, where the disks are jammed into an adjacent mesh; C, a deeper vein; the black spots are pigments cells.

Circulation of Blood in a Frog's Foot

The circulation of the blood in the web of a frog's foot. A, an artery; B, capillaries crowded with…