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Winding up the street-car springs.

Car Springs

Winding up the street-car springs.

Drift material, loose material left on the surface by a retiring glacier, plays a part in wells and springs. (a) Beds of clay variously disiposed in a mass of sandy materials. (b) Wells sunk in different situations, and finding a supply of water only when a bed of clay is reached. A well on top of a hill may be shallower than one at the foot. (c) The surface of the earth. (d) Outcrop bed of clay, causing a spring. If the porous materials contain fragments of limestones, these spring waters are hard, and d. A well carried below its supplying-bed may lose its water again.

Phenomena of Wells and Springs in Drift Material

Drift material, loose material left on the surface by a retiring glacier, plays a part in wells and…

The Greek Hydria is used as a water-pot to carry water with from springs. Maidens carried it on their heads vertically when full and horizontally when empty.

Greek Hydria

The Greek Hydria is used as a water-pot to carry water with from springs. Maidens carried it on their…

This Greek Hydria has a Kalpis form that is smooth and painted in black and red figures on the shoulder. It is used as a water-pot to carry water from springs.

Greek Hydria

This Greek Hydria has a Kalpis form that is smooth and painted in black and red figures on the shoulder.…

A coiled wire spring, used for various purposes.

Spring

A coiled wire spring, used for various purposes.

Street railway car, drawn by horses.

Street Car

Street railway car, drawn by horses.