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Scientific American, Vol. 41, No. 3 (July 1879) (1879)

leaf 8

An illustration from Scientific American, Vol. 41, No. 3 (July 1879), 1879, leaf 8
n insulator for telegraph wires, formed of a piece of the dome is another ingenious device, by which a drill tube and mud, connects the plugs by cords, and the last one by a can be brought directly over any point on the bottom within glass perforated longitudinally, and a screw adapted to the line… … and mouth, and has transparent the tides. The operations of the eye plates or windows. CBOSS SECTION OF SCOW, SHOWING WELL HOLE, scow are grandly simple. With the © 1879 SCIENTIFIC AMERICAN, INC

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