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A boring in the ground through which currents of water rise from various depths toward or above the surface.

Artesian Well

A boring in the ground through which currents of water rise from various depths toward or above the…

Artesian Wells differ from ordinary wells in that their waters are discharged by natural pressures on their reservoirs, so that pumping is not necessary to raise the water Such wells are therefore true springs.

Artesian Well

Artesian Wells differ from ordinary wells in that their waters are discharged by natural pressures on…

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…

"Nave of Wells Cathedral." —D'Anvers, 1895

Nave

"Nave of Wells Cathedral." —D'Anvers, 1895

A spring is a point where groundwater flows from the ground, and is thus where the aquifer surface meets the ground surface

Origin of Springs

A spring is a point where groundwater flows from the ground, and is thus where the aquifer surface meets…

Passenger Depot of the Chicago and North-Western Railroad, corner of Wells and Kinzie streets.

Passenger Depot

Passenger Depot of the Chicago and North-Western Railroad, corner of Wells and Kinzie streets.

When the outlet tube of the reservoir is siphon-shaped, the discharge of the spring becomes <em>periodical</em>. The spring continues to discharge its waters for a time, and then stops flowing, even during wet weather. After a certain interval it again charges. The times during which the spring continues to discharge are always practically the same. Hence the spring is called a periodical spring.

Periodical Spring

When the outlet tube of the reservoir is siphon-shaped, the discharge of the spring becomes periodical.…

"Clustered pillar from the nave of Wells Cathedral." &mdash;D'Anvers, 1895

Clustered pillar

"Clustered pillar from the nave of Wells Cathedral." —D'Anvers, 1895

"Plan of Wells Cathedral. A, Apse or apsis. B, Altar, altar-platform, and altar-steps. D E, Eastern or lesser transept. F G, Western or greater transept. H, Central towers. I J, Western towers. K, North porch. L, Library or register. M, Principal or western doorway. N N, Western side doors. O, Cloister yard or garth. P Q, North and south aisles of choir. R S, East and west aisles of transept. T U, North and south aisles of nave. R R, Chapels. V, Rood screen or organ loft. W, Altar of Lazy chapel." &mdash; Winston's Encyclopedia, 1919

Wells Cathedral

"Plan of Wells Cathedral. A, Apse or apsis. B, Altar, altar-platform, and altar-steps. D E, Eastern…

An oil well is a general term for any boring through the Earth's surface designed to find and produce petroleum oil hydrocarbons. Usually some natural gas is produced along with the oil, and a well designed to produce mainly or only gas may be termed a gas well. If boring happens to penetrate the higher portion the gas rushes forth with greater or less violence and pesisstence.

Oil Wells

An oil well is a general term for any boring through the Earth's surface designed to find and produce…