"When one is at sea, or standing on the sea-shore, the first part of a ship seen at a distance, is its mast. As the bessel advances, te mast rises higher and higher above the horizon, and finally the hull, and whole ship, become visible. Now, were the Earth's surface an exact plane, no such appearance would take place, for we should then see the hull long before the mast or rigging, because it is much the largest object." -Comstock 1850

Spheroidal Form of the Earth

"When one is at sea, or standing on the sea-shore, the first part of a ship seen at a distance, is its…

"Epicycloidal teeth, teeth for gearing cut in the form of an epicycloid." -Whitney, 1911

Epicycloidal Teeth

"Epicycloidal teeth, teeth for gearing cut in the form of an epicycloid." -Whitney, 1911

Frame used to frame tables, this is a small type design featuring shape.

Small Frame for Table Top

Frame used to frame tables, this is a small type design featuring shape.

"The Assyrian physiognomy, as determined by the sculptures exhumed from the ruins of Nimrud and Khorsabad, is identical with that which the Israelite has made familiar to all the world. The forehead is low and straight; the brow prominent; the eyes large and oriental; the nose aquiline and sometimes coarse; the mouth firm-set; the lips rather thick; the chin strong and symmetrical."—Ridpath, 1885

Assyrian King

"The Assyrian physiognomy, as determined by the sculptures exhumed from the ruins of Nimrud and Khorsabad,…

Dryer weed from canada and parts of the United States, they bear yellow flowers.

Solidago Nemoralis

Dryer weed from canada and parts of the United States, they bear yellow flowers.

"An improved form of apparatus for the fractionation [sic] is represented in fig. 9." —The Encyclopedia Britannica 1910

Apparatus Designed for Spectroscopic Examination

"An improved form of apparatus for the fractionation [sic] is represented in fig. 9." —The Encyclopedia…

"One allotropic forms of sulphur, that of a lemon-yellow brittle solid, crystallizing in orthorhombic octahedrons." —Hallock 1905

Suphur

"One allotropic forms of sulphur, that of a lemon-yellow brittle solid, crystallizing in orthorhombic…

"Tie one end of a soft cotton rope about 20 feet long to a fixed support, and hold the other end in the hand. Move the hand up and down with a quick, sudden motion, so as to set up a series of waves in the rope, as shown, in which each curved line may be considered an instantaneous photograph of a rope thus shaken." -Avery 1895

Form of Waves

"Tie one end of a soft cotton rope about 20 feet long to a fixed support, and hold the other end in…