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Leaves - unequally twice-compound (odd-feathered; leaflets very numerous - seven to thirteen on the different branches of the main leaf-stem; alternate; edge of leaflets entire. Outline - leaflets, egg-shape or oval. Apex - sharply taper-pointed. Base, slightly heart-shaped or rounded. Leaf-stem - in the autumn takes a violet tinge. Leaf - one and one half to three feet long, about one half as wide. Leaflets, one to two and one half inches long, of a dull green. Bark - of trunk, rough and scaly, separating in small and hard crosswise and backward-curled strips. Branchlets stout and not thorny. Flowers - in white spikes along the branches. May-July. Fruit - in large curved pods (Six to ten inches long, by two inches broad), pulpy within, of a reddish-brown color, flattened and hard. Each pod contains several hard, gray seeds one half of an inch or more in diameter. September, October. Found - in Franklin County, Pennsylvania (Porter), Western New York, westward and southward to Middle Tennessee. Not common. General information - A tree sixty to eighty feet high, or more, with a rather small and regular head. The fewness and the abruptness of its large branches give to it in the winder a dead and stumpy look, whence one of its common names. Its bruised and sweetened leaves are used at the South for poisoning flies. Its seeds were formerly used as a substitute for coffee.

Genus Gymnocladus, Lam. (Coffee Tree)

Leaves - unequally twice-compound (odd-feathered; leaflets very numerous - seven to thirteen on the…

Leaves - compound; )even-feathered, leaflets, ten to twenty-two or more, usually about fourteen), sometimes twice compound; alternate; edge of leaflets entire as seen above, but as seen below often remotely and slightly toothed. Outline of leaflet - long oval or long egg-shape. Base - and narrowed. Apex - rounded. Leaf/Stem - and very short. Leaflet/Stem - downy. Leaflets - three fourths to one and a half inches long; about one third as wide. Often several of them (one to three) are partly or wholly divided into smaller leaflets. Surfaces smooth and shining. Bark - of trunk, gray, and much less rough than that of the common Locust (which has a somewhat similar leaf); branchlets brown and often warty. The branches and the trunk, excepting in very young and quite old trees, are usually thickly covered with spines, two to four inches long, which are curved at the base, often two- to three-branches, and of a reddish-brown color. Flowers - small and greenish. Fruit - a long, flat pod (nine to eighteen inches long) reddish; somewhat twisted, and filled between the seeds with a pulp which at first is sweet (whence the name "Honey" Locust) but which soon becomes sour. The seeds are flat, hard, and brown. Found - native in Pennsylvania, westward and southward, but also somewhat naturalized and widely introduced northward. General Information - A tree sometimes seventy feet high, with wide-spreading and graceful branches, and light and delicate foliage. It is often used as a hedge plant. A variety entirely bare of thorns (var. inermis) is sometimes found; also a variety (var. brachycarpos) with shorter fruit and thorns.

Genus Gleditschia, L. (Honey Locust)

Leaves - compound; )even-feathered, leaflets, ten to twenty-two or more, usually about fourteen), sometimes…

Leaves - compound (odd-feathered; leaflets eleven to thirty-one); alternate; edge of leaflets evenly and sharply toothed. Outline - of leaflet, narrow egg-shape. Apex - long, taper-pointed. Base, rounded or slightly heart-shaped. Leaflet/Stem - lacking. Leaf/Stem - densely velvety-hairy. Leaflet - usually two to four inches long and about one fourth as wide; the under surface whitish and more or less downy. Leaf - one or two feet or more in length. Branchlets - and stalks, especially towards their ends, covered with a very dense velvet-like down, often crimson-tinged. The just is milky and acid. Flowers - greenish-yellow, in upright, pyramid-shaped bunches at the ends of the branches. June. Berries - rounded, somewhat flattened, bright crimson velvety, crowded. Stone - smooth. Juice, acid. September, October. Found - from New Brunswick and the valley of the St. Lawrence through the Northern States, and southward along the Alleghany Mountains to Central Alabama. General Information - A small tree, ten to thirty feet high (or often a shrub), with straggling and evenly spreading branches that are leaved mostly toward their ends, giving an umbrella-like look to the tree. The wood is very soft and brittle; yellow within; the sap-wood white. The young shoots with the pith removed, are used in the spring as "sap quills" in drawing the sap from the sugar maples. The downy and irregular branchlets are suggestive of the horns of a stag, whence the name. An infusion of the berries is sometimes used as a gargle for sore-throat. This species is not poisonous. A variety with deeply gashed leaves (var. laciniata) is reported from Hanover, N. H.

Genus Rhus, L. (Sumach)

Leaves - compound (odd-feathered; leaflets eleven to thirty-one); alternate; edge of leaflets evenly…

Leaves - compound (odd-feathered; leaflets, nine to fifteen); alternate (often alternate in threes); edge of leaflets finely and sharply toothed. Outline - of leaflet, long and narrow egg-shape. Apex, taper-pointed. Base - rounded and slightly pointed. Leaflet/Stem - lacking, or very short. Leaf - eight to twelve inches long. Leaflet - two to three and one half inches long; surfaces smooth. Bark - of the trunk, reddish-brown and rather smooth. Flowers - small and white, in large, flat clusters, over the surface of the tree - fifty to one hundred or more flowers in a cluster. May, June. Fruit - very ornamental, about the size of peas, scarlet, in large, flat clusters, ripening in autumn and remaining into the winter. Found - from Labrador and Newfoundland through the Northern States and southward along the Alleghany Mountains. Its finest growth is on the northern shores of Lake Huron and Lake Superior. General Information - A slender, somewhat pyramid-shaped, tree, ten to thirty feet high, much and justly prized as one of the best of the native trees for ornamental planting. Its bark and the unripe fruit are very astringent, and are sometimes used medicinally. A slightly different species (P. sambucilolia) is sometimes found in cold swamps and on the borders of streams along the Northern frontier. The Mountain Ash or "Rowan Tree" has for a long time been renowned as a safeguard against witches and all evil spirits. A mere twig of it suffices. "Rowen-tree and red thread Put the witches to their speed." "The spells were vain, the hag returned To the queen in sorrowful mood, Crying that witches have no power Where there is row'n-tree wood."

Genus Pyrus, L. (Mountain Ash)

Leaves - compound (odd-feathered; leaflets, nine to fifteen); alternate (often alternate in threes);…

Leaves - compound (odd-feathered; leaflets, thirteen to twenty-one); alternate; edge of leaflets sharp-toothed. Outline of leaflet - long egg-shape. Apex - taper-pointed. Base - rounded or slightly heart-shaped, and one-sided. Leaf/Stem - slightly downy. Leaflet/Stem - very short. Leaf - twelve inches long, or more. Leaflets - about two to four inches long; the lower pairs shortest; slightly downy beneath. Bark - blackish and thick. Fruit - about two inches in diameter; rounded; the husk greenish-yellow when ripe, roughly dotted, spongy, decaying without splitting into sections; the nut dark, and deeply and roughly furrowed. October. Found - from Western Massachusetts westward and southward. Its finest growth is west of the Alleghany Mountains. Eastward it is now everywhere scarce.. General Information - A tree thirty to sixty feet high, or often much higher. Its rich, dark-brown heart-wood is of great value, and has been more widely used in cabinet-work, for interior finish, and for gun-stocks than the wood of any other North American tree. Juglans, from two Latin words meaning nut of Jupiter.

Genus Juglans, L. (Walnut)

Leaves - compound (odd-feathered; leaflets, thirteen to twenty-one); alternate; edge of leaflets sharp-toothed.…

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, five); alternate; edge of leaflets sharp-toothed. Outline - of leaflet, long oval, reverse egg-shape or egg-shape, the lower pair differing in shape from the others, and much smaller. Apex - long-pointed. Base - of the end leaflet, wedge-shape; of the others, more or less blunted. Leaf/Stem - rough throughout. Buds - large and scaly, often of a green and brown color. Leaflet/Stems - lacking (or scarcely noticeable), excepting the roughish stem of the end leaflet. Leaflets - four to eight inches long; roughish below. Bark - dark and very rough in the older trunks, peeling up and down in long, shaggy strips. Often the strips cling at their middle and are loose at each end. Fruit - round, nearly one and a half to two inches in diameter; the husk, thick (nearly half an inch), depressed at the center, grooved at the seams, and wholly separating into four inches at maturity; the nut, about one inch long, often the same in breadth, slightly flattened at the sides, angular, nearly pointless, whitish, with a rather this shell, and a large finely flavored kernel. October. Found - from the valley of the St. Lawrence River to Southeastern Minnesota, and southward to Western Florida. Its finest growth is west of the Alleghany Mountains. General Information - A tree, fifty to eighty feet high, of great value. Its tough and elastic wood is used in making agricultural implements, carriages, axe-handles, etc. It ranks also among the best of woods for fuel. Most of the "hickory nuts" of the markets are from this species. All the Hickories are picturesque trees. Their tendency, even when standing alone, is to grow high, and with heads that, instead of being round, are cylinder-shaped to the very top, with only enough breaks and irregularities to add to the effect. This tendency is more marked in the Hickories than in any other of the leaf-shedding trees of North America. They are worthy of the name sometimes given them of 'the artist's tree." Hicoria, from a Greek word meaning round, in allusion to the shape of the nut.

Genus Hicoria, Raf., Carya, Nutt. (Hickory)

Leaves - compound (odd-feathered; leaflets, five); alternate; edge of leaflets sharp-toothed. Outline…

Leaves - compound (odd-feathered; leaflets, three, sometimes five, rarely seven); opposite; edge of leaflet remotely and unequally coarse-toothed. Outline - of leaflets, egg-shape or oval. Apex - taper-pointed. Base - variable and often uneven. Leaflets - slightly rough; the ribs very marked. Bark - of young trunks, smoothish and yellowish-green; twigs, light green. Flowers - small and greenish, in delicate, drooping clusters from the sides of the branches. Fruit - large, yellowish-green, smooth, in long, loose, late-hanging clusters. Found - North, South, and West. One of the most widely distributed of the North American trees, with its finest growth in the region of the Wabash and Cumberland rivers. General Information - A tree twenty to thirty feet high, with spreading branches. Its wood is light and of slight value.

Genus Negundo, Moench

Leaves - compound (odd-feathered; leaflets, three, sometimes five, rarely seven); opposite; edge of…

Leaves - compound (odd-feathered; leaflets, seven to nine); opposite; edge of leaflets slightly toothed or entire; entire at base. Outline - of leaflet, long oval or long egg-shape. Apex - taper-pointed. Base - somewhat pointed. Leaf/Stem - smooth. Leaflet/Stem - about one fourth of an inch long, or more; smooth. Leaf/Bud - rusty-colored and smooth. Leaflet - two to six inches long; pale beneath; downy when young, but becoming nearly smooth, except on the ribs. Bark - of the trunk, light gray. In very young trees it is nearly smooth, but it soon becomes deeply furrowed - the furrows crossing each other, and so breaking the bark into irregular, somewhat square or lozenge-shaped plates. Then in very old trees it becomes smooth again, from the scaling off of the plates. The branches are smooth and grayish-green. The young shoots have a polished, deep-green bark, marked with white lines or dots. Winged seeds - one and a half to two inches long, with the "wing" about one fourth of an inch wide, hanging in loose clusters from slender stems. The base of the seed it pointed and not winged. Found - in rich woods, from Southern Canada to Northern Florida and westward. It is most common in the Northern States. The finest specimens are seen in the bottom lands of the lower Ohio River basin. General Information - a tree forty to eighty feet high. Often the trunk rises forty feet without branching. Its tough and elastic timer is of very great value, being widely used in the manufacture of agricultural implements, for oars, and the shafts of carriages, and in cabinet-work. 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 nine); opposite; edge of leaflets slightly toothed…

Leaves - compound (odd-feathered; leaflets, seven to nine); edge of leaflets nearly entire or slightly toothed. Outline - of leaflet, long oval or egg-shape. Apex - taper-pointed. Base - somewhat pointed. Leaf/Stem - velvety-downy. Leaflet/Stem - about one fourth of an inch long, or somewhat less, and velvety-downy. Leaf/Bud - rounded, nearly concealed by the leaf-stem, downy, and of a dark, rusty brown. Leaflet - two to six inches long, downy beneath, and pale, becoming reddish. Bark - of the trunk, dark ashy or granite-gray, or of a deep brown. It is slightly furrowed up and does, the furrows seldom joining or crossing. The branches are grayish. The young shoots are velvety, with a grayish or rusty down. Winged seeds - resembling those of the White Ash, but usually with the end of the wing more rounded. Found - along borders of streams and in low and swampy ground - New Brunswick to Minnesota, and southward to Northern Florida and Alabama; but rare west of the Alleghany Mountains. Its finest growth is in the Northern Atlantic States. General Information - A medium-sized tree, usually thirty to fifty feet high, of less value than the White Ash. 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 nine); edge of leaflets nearly entire or slightly…

Leaves - compound (hand-shaped; leaflets, usually five, sometimes seven); opposite; edge toothed. Outline - of leaflet, long oval, long egg-shape, or long reverse egg-shape. Apex - taper-pointed. Base - pointed. Leaflet - four to nine inches long, one to three inches wide, usually minutely downy beneath. Flowers, pale yellow. April, May. Fruit - two to two and one half inches in diameter, rounded. Husk - not prickly, but uneven. Nut - one or two in a husk, large and brown. Found - from Alleghany County, Pennsylvania, southward along the Alleghany Mountains to Northern Georgia and Alabama, and westward. General Information - A tree thirty to seventy feet high. Its wood is light and hard to split. With the other species of the same genus it is preferred, above any other American wood, for the making of artificial limbs.

Genus Aesculus, L. (Buckeye, Horse Chestnut)

Leaves - compound (hand-shaped; leaflets, usually five, sometimes seven); opposite; edge toothed. Outline…

Leaves - compound (hand-shaped; leaflets, five); opposite; edge toothed. Outline - of leaflet, oval or long oval. Apex - taper-pointed. Base - pointed. Leaflets - three to seven inches long; one and a half to three inches wide. Bark - with a disagreeable odor. Flowers - small, yellowish-white. June. Fruit - about three fourths of an inch in diameter. Husk - prickly when young. Nut - smooth. Found - along the western slopes of the Alleghany Mountains - Pennsylvania to Northern Alabama and westward. General Information - A small, ill-scented tree (eighteen to thirty-five feet high). Its wood is light and hard to split. With the other species of the same genus it is preferred, above any other American wood, for the making of artificial limbs.

Genus Aesculus, L. (Buckeye, Horse Chestnut)

Leaves - compound (hand-shaped; leaflets, five); opposite; edge toothed. Outline - of leaflet, oval…

Scales are made with different divisions for different purposes. For machine, structural and architectural drawing the architects' scale of proportional feet and inches is used.

The Scale of the Architects

Scales are made with different divisions for different purposes. For machine, structural and architectural…

A girl is measuring the chalkboard using a yardstick. There are conversions written on the board.

Girl Measuring

A girl is measuring the chalkboard using a yardstick. There are conversions written on the board.

Small in size in North America, the sunfish is Native on the east coast and is red or orange in color. The oceanic variety is several feet in length.

Sunfish

Small in size in North America, the sunfish is Native on the east coast and is red or orange in color.…

A standard 6x4 feet ice hockey goal net.

Hockey Net

A standard 6x4 feet ice hockey goal net.

A mother sits with her two daughters: one on her lap and one at her feet.

Mother and Daughters

A mother sits with her two daughters: one on her lap and one at her feet.

A girl holding a doll with a cat at her feet.

Girl with Doll and Cat

A girl holding a doll with a cat at her feet.

A mouse running away from children's feet walking downstairs.

Feet and Mouse

A mouse running away from children's feet walking downstairs.

A baby playing with his feet.

Baby

A baby playing with his feet.

The figure "represents the progress of a wave up a broad depression or valley 40 miles wide at the bottom and 240 at the top, the depth at the center being 1000 feet." -Coast and Geodetic Survey, 1901

Wave Progress

The figure "represents the progress of a wave up a broad depression or valley 40 miles wide at the bottom…

Illustration of a child holding a kite that can be used to write mathematics story problems involving addition and subtraction. For example: John's kite tail was 4 feet long. 1 foot of it broke off. How many feet were left?

Child Holding A Kite

Illustration of a child holding a kite that can be used to write mathematics story problems involving…

Illustration of a tree branch with 7 birds and one flying away. It can be used to write mathematics story problems involving addition and subtraction. For example: 8 birds were on the tree. One flew away. How many feet were left?

8 Birds On A Tree Branch

Illustration of a tree branch with 7 birds and one flying away. It can be used to write mathematics…

Illustration showing that one foot is one third of a yard.

Yard And Foot

Illustration showing that one foot is one third of a yard.

"Starfish. I. Ventral surface; t.f., tube-feet extended; a.g., the ambulacral groove with the tube-feet retracted; m., the mouth. II. Dorsal surface, showing the position of the madrepore (M.); the two adjacent arms form the bivium." -Thomson, 1916

Starfish

"Starfish. I. Ventral surface; t.f., tube-feet extended; a.g., the ambulacral groove with the tube-feet…

"Ventral surface of disc of an Ophiuroid (Ophiothrix fragilis). g., Openings of genital pockets or bursae; m., mouth; v., ventral plates of arms; sp., spines of arms; tf., tube-feet--at the right side these are represented as retracted; o., the opening through which they are protruded; p., plates around mouth bearing the so-called teeth; one of these plates is perforated, and functions as the madreporite." -Thomson, 1916

Ophiuroid

"Ventral surface of disc of an Ophiuroid (Ophiothrix fragilis). g., Openings of genital pockets or bursae;…

"Apical disc of sea-urchin. In the centre is the periproct bearing the anus; around it are five genital or inter-radial plates (g.), one of which is modified as the madreporite (m.); beyond these five ocular or radial plates (o.); i.r.a., an inter-radial or inter-ambulacral area, with spines only; r.a., a radial or ambulacral area, with spines and openings for tube-feet." -Thomson, 1916

Sea Urchin

"Apical disc of sea-urchin. In the centre is the periproct bearing the anus; around it are five genital…

"Dissection of Holothurian (Holothuria tubulosa) from the ventral surface." t, tentacles; tf, scattered tube-feet; c, calcareous ring; a, ampullae of tentacles; r, circular vessel; st, stone canal; o, Polian vesicle; rc, radial canals; lm, longitudinal muscles; g1-g2, gut; m, mesentery; cl, cloaca; an, anus; rt, right respiratory tree; ov, ovary. -Thomson, 1916

Holothurian Dissection

"Dissection of Holothurian (Holothuria tubulosa) from the ventral surface." t, tentacles; tf, scattered…

"Mysis flexuosa, from side. b., Brood-pouch borne on posterior thoracic limbs; o., otocyst in tail. Note eight pairs of similar biramose thoracic feet. The last two thoracic segments are not covered by the shield." -Thomson, 1916

Mysis Flexuosa

"Mysis flexuosa, from side. b., Brood-pouch borne on posterior thoracic limbs; o., otocyst in tail.…

"Feet of horse and its predecessors. 1, Palaeotherium; 2, Anchitherium; 3, Hippotherium; 4, Equus." -Thomson, 1916

Horse Feet

"Feet of horse and its predecessors. 1, Palaeotherium; 2, Anchitherium; 3, Hippotherium; 4, Equus."…

The digestive system. This figure represents the whole tract of the intestinal canal, not exactly in its natural position, but spread out so as to show the relative proportions; f, the esophagus; g, cardia; h, pylorus; i, i, the duodenum, about twelve fingers; breadth in length; k, hepatic duct; l, gall bladder; m, cystic duct; n, ductus communis, formed by the union of both; o, the opening of this duct into the duodenum; p, pancreatic duct; q, its opening into the duodenum; r, jejunum; s, ilium; these constitute the small intestines, and are about 26 feet in length, or five times the length of the body; t, termination of ilium in the coecum; , u, superior fold of valve of colon; v, inferior do. ; w, coecum; x, vermiform process; y, y, colon; z, rectum. The coecum, colon, and rectum, form the large intestines, and are about 6 feet in length; the coecum being about 4 inches long, and the same in diameter. The arrows show the direction which the food takes in digestion.

Stomach

The digestive system. This figure represents the whole tract of the intestinal canal, not exactly in…

"Ambulacral system of a starfish. a, ampullae; ap, Polian vesicles; c, circular canal; m, madreporite; m', madreporic canal; p, tube-feet; r, radial vessels; r', branches to ampullae." -Parker, 1900

Ambulacral System

"Ambulacral system of a starfish. a, ampullae; ap, Polian vesicles; c, circular canal; m, madreporite;…

"Generalized schematic of the hydrogeology of the study area. 1, unconfined conditions (Hawthorn Formation absent or very thin); 2, semiconfined conditions (Hawthorn Formation less than 100 feet thick); 3, confined conditions (Hawthorn Formation greater than 100 feet thick)." -Hatzell, 1995

Upper Floridan Aquifer

"Generalized schematic of the hydrogeology of the study area. 1, unconfined conditions (Hawthorn Formation…

"Great wall of China: 20 feet high, 40 feet wide, 800 miles long." -Foster, 1921

Great Wall of China

"Great wall of China: 20 feet high, 40 feet wide, 800 miles long." -Foster, 1921

" In Rockbridge County, Virginia, is to be found one of the greatest curiosities in the United States, a natural bridge. This bridge consists of a stupendous arch of limestone rock, over a chasm fifty feet wide dat its base and ninety feet at the top."- Lupton

Natural Bridge in Virginia

" In Rockbridge County, Virginia, is to be found one of the greatest curiosities in the United States,…

Silver Springs is a clear basin within the St. Johns River in Florida. It is famed for its depth and clarity of the water. This spring is seventy feet deep, as clear as crystal, and remarkably fresh and cool.

Silver Springs, Florida

Silver Springs is a clear basin within the St. Johns River in Florida. It is famed for its depth and…

"Cotton is a downy substance produced on the seeds of he cotton plant, Gossypium, which is herbaceous, and of a height varying from four to twenty feet." -Lupton

Cotton Plant

"Cotton is a downy substance produced on the seeds of he cotton plant, Gossypium, which is herbaceous,…

"The most common variety of the flax plant has a very slender erect stem, two or three feet high, branching only near the top, so as to form a loose corymb of flowers." -Lupton

Flax Plant

"The most common variety of the flax plant has a very slender erect stem, two or three feet high, branching…

"It is a very large tree, the trunk being sometimes three feet in diameter, although it is of little is as a timber tree, the wood being spongy." -Lupton

The Gutta-percha tree

"It is a very large tree, the trunk being sometimes three feet in diameter, although it is of little…

"Pimento or Jamaica pepper, otherwise called allspice, is a small berry, the fruit of a beautiful tree, abut thirty feet high, with a straight trunk much branched above covered with a smooth, gray bark." -Lupton

Allspice

"Pimento or Jamaica pepper, otherwise called allspice, is a small berry, the fruit of a beautiful tree,…

"The date is the fruit of a tall and graceful palm which shoots up a single straight stem to height of fifty or sixty feet, and then expands into a beautiful crown of leaves.

Date Tree

"The date is the fruit of a tall and graceful palm which shoots up a single straight stem to height…

A most beautiful Central American bird of the Trogon family. It is about the size of a magpie and the male is adorned with tail-fathers from three to three and a half feet in length, and of a gorgeous emerald colour.

Quezal Bird

A most beautiful Central American bird of the Trogon family. It is about the size of a magpie and the…

"To find the number of bushels of grain in a bin or box, multiply the length in feet by the height in feet, then by the width in feet and then by 8. For instance. In a bin 10 feet long, 6 feet high and 8 feet wide, 10 x 8 x 6 x 8 = 384." -Foster, 1921

Capacity

"To find the number of bushels of grain in a bin or box, multiply the length in feet by the height in…

Three students use measuring tape to measure the school garden outside.

Measuring Garden

Three students use measuring tape to measure the school garden outside.

"A cord of wood is a solidly built pile of 8 feet long, 4 feet wide and 4 feet high. 1. How many cords, stove-wood measure, each stick 12 inches long, could be made from a full-sized cord of wood? 2. If the full cord as pictured above is bought for $3.00 and sawed into stove lengths as in problem (1) and sold for $1.25 a cord, what is the profit? 3. If 6 hours' time was required to saw this wood, and labor cost 25 cents per hour, was there anything gained on the transaction?" -Foster, 1921

Cord of Wood

"A cord of wood is a solidly built pile of 8 feet long, 4 feet wide and 4 feet high. 1. How many cords,…

German for "running machine", the dandy horse was a two-wheeled vehicle propelled by the rider's feet.

Dandy Horse

German for "running machine", the dandy horse was a two-wheeled vehicle propelled by the rider's feet.

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…

A starchy product obtained from the trunk of several species of a genus of palms named Sagus, and chiefly by S.Rumphii and S.Lavis. The tree is about 30 feet high, and from 18 to 22 inches in diameter.

Sago Palm

A starchy product obtained from the trunk of several species of a genus of palms named Sagus, and chiefly…

The genus Cystophora includes the large bladder-nose, hooded or crested seal of the Greenland seas, in which the nose of the males has a curious dispensable sac, and which attains an average length of from 10 to 12 feet.

Hooded Seal

The genus Cystophora includes the large bladder-nose, hooded or crested seal of the Greenland seas,…

The upper surface of the bones of the foot. Labels: 1, the surface of the astragulus or ankle bones, where it unites with the tibia. 2, The body of the astragulus. 3, Calcis or heel-bone. 4, The scaphoid. 5,6,7, The cuneiform. 8, The cuboid. 9,The metatarsal bones. 10,11, The phalanges of the great toe. 12, 13, 14, The phalanges of the other toes.

Bones of the Foot

The upper surface of the bones of the foot. Labels: 1, the surface of the astragulus or ankle bones,…

The Pacinian bodies or corpuscles are elongated oval bodies situated on some of the cerebrospinal and sympathetic nerves, especially the cutaneous nerves of the hands and feet; and on branches of the large sympathetic plexus about the abdominal aorta. Shown are the extremities of a nerve of the finger with Pacinian corpuscles attached.

Pacinian Corpuscles in a Human

The Pacinian bodies or corpuscles are elongated oval bodies situated on some of the cerebrospinal and…

The Pacinian bodies or corpuscles are elongated oval bodies situated on some of the cerebrospinal and sympathetic nerves, especially the cutaneous nerves of the hands and feet; and on branches of the large sympathetic plexus about the abdominal aorta. Shown is a Pacinian corpuscle of the cat's mesentery. The stalk consist of a nerve fiber (N) wit its think outer sheath. The peripheral capsules of the Pacinian corpuscle are narrower near the entrance of the axis cylinder into the clear central mass. A hook-shaped termination with the end bulb; it possesses a sheath which is the continuation of the peripheral capsules of the Pacinian corpuscle.

Pacinian Corpuscle of a Cat

The Pacinian bodies or corpuscles are elongated oval bodies situated on some of the cerebrospinal and…

The Pacinian bodies or corpuscles are elongated oval bodies situated on some of the cerebrospinal and sympathetic nerves, especially the cutaneous nerves of the hands and feet; and on branches of the large sympathetic plexus about the abdominal aorta. Shown is the summit of a Pacinian corpuscle of a human finger, showing the endothelial membranes linking the capsules.

Pacinian Corpuscle of a Human

The Pacinian bodies or corpuscles are elongated oval bodies situated on some of the cerebrospinal and…

The Egyptian chair has legs that are prismatic or often turned, frequently with claw feet.

Egyptian Chair

The Egyptian chair has legs that are prismatic or often turned, frequently with claw feet.

This Medieval chest is from England. It was a prismatic box without feet, with delicate iron mounts and all kinds of carving.

Medieval Chest

This Medieval chest is from England. It was a prismatic box without feet, with delicate iron mounts…

This Renaissance chest of Dutch origin was richly decorated with carving, intarsia or wood inlaying, ivory and metal reliefs. It had no feet and was chiefly used for jewelry, and as work-boxes.

Renaissance Chest

This Renaissance chest of Dutch origin was richly decorated with carving, intarsia or wood inlaying,…

This Renaissance chest of Italian origin was richly decorated with carving, intarsia or wood inlaying, ivory and metal reliefs. It had no feet and was chiefly used for jewelry, and as work-boxes.

Renaissance Chest

This Renaissance chest of Italian origin was richly decorated with carving, intarsia or wood inlaying,…

This Renaissance chest of Flemish origin was from the 17th century. It was richly decorated with carving, intarsia or wood inlaying, ivory and metal reliefs. It had no feet and was chiefly used for jewelry, and as work-boxes.

Renaissance Chest

This Renaissance chest of Flemish origin was from the 17th century. It was richly decorated with carving,…

A gas meter that measures feet of gas used. The first meter is in the thousands place and points just passed 5, the hundreds place points passed 4, and the tens place points passed 6. The gas meter reads 5,460 feet of gas used.

Gas Meter

A gas meter that measures feet of gas used. The first meter is in the thousands place and points just…

Various forms of footprints. A, normal foot with high arch; B, normal foot also with high arch; C, normal foot with low arch; D, flatfoot.

Various Forms of Footprints

Various forms of footprints. A, normal foot with high arch; B, normal foot also with high arch; C, normal…