Exercise
"Stretch hands overhead. Bend back as far as possible, repeating until tired. Alternate by bending forward…
Exercise
"Hands on hips. Twist the trunk around in a circle, first one way, then the other." -Foster, 1921
Exercise
"Hands on hips. Lower the trunk to a squatting position and raise to standing." -Foster, 1921
Exercise
"Tense the muscles of the neck and turn head... forward and back and around in a circle." -Foster, 1921
Exercise
"Place the palms of the hands together in front of the breast and press hard." -Foster, 1921
Exercise
"Lock the fingers together in front of the chest and pull one hand against the other." -Foster, 1921
Exercise
"Arms outstretched horizontally. Make the hands describe a full circle forward and back." -Foster, 1921
Exercise
"Arms outstretched horizontally. Make the hands describe a full circle forward and back." -Foster, 1921
Exercise
"Place the hands on the floor, the body outstretched, face downward. Raise and lower the body from the…
Exercise
"Hands on back of a chair or table. Raise and lower the knees rapidly, as in running." -Foster, 1921
Plowing and Sowing
A drawing of plowing and sowing in the Pyramid Age of Egypt. The hieroglyphs tell the story of the picture.
Farm Border
A decorative border with a sleeping farmer while the cow stands on the pump and the sheep play cribbage.
Orange Free State Een Shilling Revenue Stamp, 1882
Orange Free State Revenue Stamp (1 shilling) from 1882
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…
E. Communis Cell
"Free cell formation of spores in the ascus of Erysiphe communis. A, ascus with single nucleus; C, cytoplasm;…
Dicotyledon Leaf
A: "Camera-lucida drawing of a bleached leaf of a Dicotyledon, showing the course of the vascular bundles,…
Arrow Wind Vane
"The horizontal direction of the wind is usually observed by means of an instrument called the arrow…
Loaded Magazine
This image "represents a cross section through the ejector with the magazine loaded. The parts shown…
Empty Magazine
This image "shows a cross section through the magazine empty, and with cut-off "on," shown in projection.…
Coral Stages
"Life history of a coral, Monoxenia darwinii. A, B, Ovum. C, Division into two. D, four-cell stage.…
Vorticella
"Vorticella. 1. Structure. N., Macronucleus; n., micronucleus; c.v., contractile vacuole; m., mouth;…
Coccidium
"Life history of Coccidium. 1. Sporozoite; 2. Sporozoite entering a cell and becoming a trophozoite;…
O. Lobularis
"Diagrammatic representation of development of Oscarella lobularis. Bl., Free-swimming blastula with…
Liver Fluke Stages
"Life history of liver fluke. 1. Developing embryo in egg-case; 2. free-swimming ciliated embryo; 3.…
Salpa Africana
"Diagram of Salpa africana. o.a., Oral aperture; d.t., dorsal tubercle; te., tentacle; g., ganglion;…
Tortoise Skeleton
"Internal view of tortoise skeleton. H., humerus; SC., scapula running dorsally; PC., precoracoid; C.,…
Bird Limbs
"Fore-limb and hind-limb compared. H., Humerus; R., radius; U., ulna; r., radiale; u., ulnare; C., distal…
Eagle Hind-Limb
"Bones of hind-limb of eagle. f., Femur; t.t., tibio-tarsus; fb., fibula; a., ankle-joint; m.t., tarso-metatarsus;…
Mature Hydroid Planula
"C, more mature condition, in which the planula has become fixed: f, foot or attached end; o, oral or…
Letter and Ink Border
A decorative border of envelopes, letters, and inkwells with four windows and banners for captions.
Vorticella
"Vorticella. A, B, living specimens in different positions; C, optical section; D1, D2, diagrams illustrating…
Laomedea
"Stages in the development of Laomedea; A-F stages in segmentation; G, the planula enclosed in the maternal…
Medical Leech
"Head of Hirudo medicinalis, showing the three jaws (k); b, one of the jaws isolated, with the finely…
Ascidian Stages
"Diagram of the metamorphosis of the free, tailed larva into the fixed Ascidian. A, stage of free-swimming…
Blank Coordinate Grid
Illustration of an xy grid/graph. It is the Cartesian coordinate system. Neither axis is labeled.
Coordinate Grid With Axes Labeled
Illustration of an xy grid/graph. It is the Cartesian coordinate system with both axes labeled.
Blank Coordinate Grid With Grid Lines Shown
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system. Neither…