Old King Cole calling for his fiddlers three.

Old King Cole

Old King Cole calling for his fiddlers three.

Nursery rhymes combined: One of Old King Cole's fiddlers talking to Little Jack Horner.

Fiddler and Jack Horner

Nursery rhymes combined: One of Old King Cole's fiddlers talking to Little Jack Horner.

A decorative border with the King of France and al of his men.

King and Men

A decorative border with the King of France and al of his men.

Three kittens go out to see the world.

Three Kittens 1

Three kittens go out to see the world.

Three kittens run back home to their mother.

Three Kittens 6

Three kittens run back home to their mother.

Two children, a rooster, cat, and dog ride on a cow's back.

Children Riding a Cow

Two children, a rooster, cat, and dog ride on a cow's back.

The convergence of light rays in the eyeball begins in the aqueous humor is perfected in the crystalline. But when they strike the vitreous humor, which is concave on its front surface, and also less dense than the crystalline, they diverse or spread out, and are thrown upon the back part of the eye.

Convergence of Rays in the Aqueous Humor of the Eyeball

The convergence of light rays in the eyeball begins in the aqueous humor is perfected in the crystalline.…

Nicaragua Official Envelope (value unknown) from 1890

Nicaragua Unknown Value Official Envelope, 1890

Nicaragua Official Envelope (value unknown) from 1890

Egypt Official Stamp (value unknown) from 1864-1868

Egypt Official Stamp Unknown Value, 1864-1868

Egypt Official Stamp (value unknown) from 1864-1868

Egypt Official Stamp (value unknown) from 1868-1872

Egypt Official Stamp Unknown Value, 1868-1872

Egypt Official Stamp (value unknown) from 1868-1872

Iceland Official Stamp (2 aur.) from 1876

Iceland Official Stamp, 2 Aur, 1876

Iceland Official Stamp (2 aur.) from 1876

Würtemberg Official Stamp (10 pfennig) from 1881

Würtemberg Zehn Pfennig Official Stamp, 1881

Würtemberg Official Stamp (10 pfennig) from 1881

India Official Stamp (3 pies) from 1890-1891

India, Three Pies Official Stamp, 1890-1891

India Official Stamp (3 pies) from 1890-1891

Coat of Arms, Orange Free State

The Great Seal of the Orange Free State

Coat of Arms, Orange Free State

Orange Free State Stamp (3 pence) from 1888-1892

Orange Free State Drie Pence Stamp, 1888-1892

Orange Free State Stamp (3 pence) from 1888-1892

Orange Free State Revenue Stamp (1 shilling) from 1882

Orange Free State Een Shilling Revenue Stamp, 1882

Orange Free State Revenue Stamp (1 shilling) from 1882

Sweden Official Stamp (12 ore) from 1874

Sweden Tolf Ore Official Stamp, 1874

Sweden Official Stamp (12 ore) from 1874

A man exercising with chest weights. In this position, he is pulling straight back, alternating right and left repeatedly.

Chest Weights

A man exercising with chest weights. In this position, he is pulling straight back, alternating right…

A man exercising with chest weights. In this position, he is extending his right arm across his back and moving his left arm upwards.

Chest Weights

A man exercising with chest weights. In this position, he is extending his right arm across his back…

A man exercising with chest weights. In this position, he is extending his left arm across his back and moving his right arm upwards.

Chest Weights

A man exercising with chest weights. In this position, he is extending his left arm across his back…

A man exercising with chest weights. In this position, he gently moves his head forward and back.

Chest Weights

A man exercising with chest weights. In this position, he gently moves his head forward and back.

A man exercising with chest weights. In this position, he extends his left leg forward and then bends it back again.

Chest Weights

A man exercising with chest weights. In this position, he extends his left leg forward and then bends…

A man exercising with chest weights. In this position, he extends his left leg forward and then bends it back again.

Chest Weights

A man exercising with chest weights. In this position, he extends his left leg forward and then bends…

A man exercising with chest weights. In this position, he pulls his arms down and back, alternately repeating.

Chest Weights

A man exercising with chest weights. In this position, he pulls his arms down and back, alternately…

Hans and the cow are walking back home.

Hans the Innocent 5

Hans and the cow are walking back home.

The cow knocks down the dungeon wall with her horns to free Hans. This knocks his hat off but he quickly climbs out.

Hans the Innocent 9

The cow knocks down the dungeon wall with her horns to free Hans. This knocks his hat off but he quickly…

Hans jumps on the cows back to go home.

Hans the Innocent 10

Hans jumps on the cows back to go home.

Hans and the cow come in view of the cottage.

Hans the Innocent 11

Hans and the cow come in view of the cottage.

A girl with a cat, chicken, dog, a toy cow, and a toy lion.

Girl and Animals

A girl with a cat, chicken, dog, a toy cow, and a toy lion.

The foot bones of a lion.

Lion Foot

The foot bones of a lion.

"Profile of a dune, from back to front, showing its relation to the wind. The flow-lines of air are drawn above, with the eddy in front of the dune." -Gilbert, 1910

Dune and Wind

"Profile of a dune, from back to front, showing its relation to the wind. The flow-lines of air are…

"Diagram of the progress of a dune, from a to be. The arrow flies with the wind. A live tree standing before the dune when it is at a will be buried by the advance to b. Another tree, previously killed and still covered by the dune, will be brought to light when it has reached b." -Johnson, 1910

Dune Progress

"Diagram of the progress of a dune, from a to be. The arrow flies with the wind. A live tree standing…

"Schematic sectional view of a connector well between nonartesian and Floridan aquifers." -Knochenmus, 1975

Connecter Well

"Schematic sectional view of a connector well between nonartesian and Floridan aquifers." -Knochenmus,…

topography map, contour map, bird's eye view

Contour Map

topography map, contour map, bird's eye view

This diagram shows the translation from the profile of an incline to the contours in an above view.

Profile to Contours

This diagram shows the translation from the profile of an incline to the contours in an above view.

"Tobacco split worm: adult moth above; larva below at right; pupa below at left, with side view of enlarged anal segment." -Department of Agriculture, 1899

Tobacco Split Worm

"Tobacco split worm: adult moth above; larva below at right; pupa below at left, with side view of enlarged…

"The cigarette beetle: a, larva; b, pupa; c, adult; d, side view of adult; e, antenna." -Department of Agriculture, 1899

Cigarette Beetle

"The cigarette beetle: a, larva; b, pupa; c, adult; d, side view of adult; e, antenna." -Department…

The adult of the drugstore beetle, side view.

Drugstore Beetle

The adult of the drugstore beetle, side view.

The eggs and side view of the bean weevil, Bruchus obtectus.

Bean Weevil Eggs

The eggs and side view of the bean weevil, Bruchus obtectus.

"Heliothis armiger: a moth; b, dark larva; c, lighter larva entering pod; d, pupa; e, last segment of same, ventral view." -Department of Agriculture, 1899

Boll Worm Stages

"Heliothis armiger: a moth; b, dark larva; c, lighter larva entering pod; d, pupa; e, last segment of…

The cross section view of the steel-track wagon road built on country roads for "cheapness, durability, and reduction of power required to move a vehicle." -Department of Agriculture, 1899

Steel-Track Wagon Road

The cross section view of the steel-track wagon road built on country roads for "cheapness, durability,…

"Sectional view of perfumery still: a, b, junction between head (which is lifted for admission and withdrawal of material) and pan; c, d, false perforated bottom to prevent material from burning; e, f, condenser (tub of cold water with coil, which discharges at e, and overflow pipe passing off at f)." -Department of Agriculture, 1899

Perfumery Still

"Sectional view of perfumery still: a, b, junction between head (which is lifted for admission and withdrawal…

"B, older (onion) cells farther back from the root tip. The cytoplasm is becoming vacuolate; f, vacuole." -Stevens, 1916

Onion Cells

"B, older (onion) cells farther back from the root tip. The cytoplasm is becoming vacuolate; f, vacuole."…

"Free cell formation of spores in the ascus of Erysiphe communis. A, ascus with single nucleus; C, cytoplasm; N, nucleus; NL, nucleolus; B, successive stages in nuclear division with the ascus; at X, early anaphase, nuclear membrane, NM, still persisting; R, kinoplasmic radiations from the poles; at Y, telophase, new nuclear membrane not yet formed; Z, a later stage where the nuclear membranes demark the daughter nuclei." -Stevens, 1916

E. Communis Cell

"Free cell formation of spores in the ascus of Erysiphe communis. A, ascus with single nucleus; C, cytoplasm;…

"B, diagram of vascular bundles in external view and in cross section of the stem of Cerastium. The leaves are shown cut off at 1, 2, 2' and 3." -Stevens, 1916

Cerastium Stem

"B, diagram of vascular bundles in external view and in cross section of the stem of Cerastium. The…

"Diagrammatic representation of a block of pine wood highly magnified. a, Early growth; b, late growth; c, intercellular space; d, bordered pit in tangential wall of late growth; m, f and e, bordered pit in radial wall of early growth from different points of view; h, row of medullary cells for carrying food; g, row of medullary ray cells for carrying water; k, thin place in radial wall of ray cells that carry food." -Stevens, 1916

Magnified Pine

"Diagrammatic representation of a block of pine wood highly magnified. a, Early growth; b, late growth;…

A: "Camera-lucida drawing of a bleached leaf of a Dicotyledon, showing the course of the vascular bundles, and how end free in the mesophyll." C:magnified detail. -Stevens, 1916

Dicotyledon Leaf

A: "Camera-lucida drawing of a bleached leaf of a Dicotyledon, showing the course of the vascular bundles,…

"A typical stoma in cross section and surface view combined. k, guard cell; j, the gap or stoma between the guard cells; l, epidermal cell bordering a guard cell." -Stevens, 1916

Stoma

"A typical stoma in cross section and surface view combined. k, guard cell; j, the gap or stoma between…

"Portion of leaf of Sphagnum, in cross section on the left, and surface view on the right. h, hole through the wall; i, chlorophyll-bearing cells; j, water-storage and water-conducting cells, with annular thickenings at k." -Stevens, 1916

Sphagnum Leaf

"Portion of leaf of Sphagnum, in cross section on the left, and surface view on the right. h, hole through…

"Cross section, A, and surface view, B, of a leaf of common moss, showing chloroplasts, c." -Stevens, 1916

Moss Leaf Chloroplasts

"Cross section, A, and surface view, B, of a leaf of common moss, showing chloroplasts, c." -Stevens,…

"Microscopic Structure of white Statuary marble." -Geikie, 1893

Marble

"Microscopic Structure of white Statuary marble." -Geikie, 1893

"One third of the sea bottom is covered with a soft gray ooze or mud made up entirely of the shells of minute animals which live in the surface waters."

Ooze

"One third of the sea bottom is covered with a soft gray ooze or mud made up entirely of the shells…

"1. Lower mandible. 2. Upper mandible. 3. Forehead. 4. Loral space. 5. Crown of the head. 6. Hind part of the head. 7. Scapulars--long feathers frm shoulders over sides of back. 8. Smaller wing coverts. 9. Bend of the wing. 10. Larger wing coverts. 11. Tertials, arising from the second bone of the wing at the elbow-joint. 12. Secondaries, from the second bone of the wing. 13. Primaries, from the first bone of the wing. 14. Tibia, the thigh. 15. Tarsus, the shank. 16. Upper tail coverts. 17. Lower tail coverts. 18. Tail feathers." -Roosevelt, 1884

Bird Parts

"1. Lower mandible. 2. Upper mandible. 3. Forehead. 4. Loral space. 5. Crown of the head. 6. Hind part…

"The horizontal direction of the wind is usually observed by means of an instrument called the arrow wind vane, the head of the arrow pointing in the direction of approach of the wind. The arrow is free to revolve horizontally around a vertical axis placed near the head." -Waldo, 1896

Arrow Wind Vane

"The horizontal direction of the wind is usually observed by means of an instrument called the arrow…

Illustration of a child buying doll clothes. It can be used to write mathematics story problems involving addition, subtraction, money, and counting.

Child Buying Doll Clothes

Illustration of a child buying doll clothes. It can be used to write mathematics story problems involving…

Illustration of a child buying doll toys. It can be used to write mathematics story problems involving addition, subtraction, money, and counting.

Child Buying Doll Toys

Illustration of a child buying doll toys. It can be used to write mathematics story problems involving…

Illustration of a child buying toys. It can be used to write mathematics story problems involving addition, subtraction, money, and counting.

Child Buying Toys

Illustration of a child buying toys. It can be used to write mathematics story problems involving addition,…

Illustration of a child buying groceries. It can be used to write mathematics story problems involving addition, subtraction, money, and counting.

Child Buying Groceries

Illustration of a child buying groceries. It can be used to write mathematics story problems involving…

Illustration of a group of toys. It can be used to write mathematics story problems involving addition, subtraction, and counting.

Group of Toys

Illustration of a group of toys. It can be used to write mathematics story problems involving addition,…

Illustration of a group of toys. It can be used to write mathematics story problems involving addition, subtraction, and counting.

Group of Toys

Illustration of a group of toys. It can be used to write mathematics story problems involving addition,…