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Scientific American, Vol. 40, No. 26 (June 1879) (1879)

leaf 3

An illustration from Scientific American, Vol. 40, No. 26 (June 1879), 1879, leaf 3
there are now 10,882 wells pro- and far down below the present level, with its face in the ance. ducing oil in the State of Pennsylvania, and they pour out Pig. 1, in the engraving, which we take from Engineering, water, a magnificent figure of a woman in Egyptian dress, is a side elevation, and… … be suitably regulated in proportion to long, eleven feet high, and seven feet KRTJFF'S ELECTBIC LAMP. deep, and, although many of the cov- the strength of the current by means of the lever, U, and set screw, V—and by ers have been removed, nothing was the weight of the carbon holder, moves slowly…

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