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Knight's Mechanical Encyclopedia (ed. Knight), L. (search)
s of the first series are of wrought-iron, forged tapering; those above are of hollow cast-iron, each series successively decreasing in diameter. The lantern is supported on a cylinder of boiler-iron resting on a platform at the top of the columns. Lighthouse at Trinity shoals. The following is a list of the electric lights in England and France, with the dates at which they were erected: Dungeness, January, 1862; Cape La Heve, France, South Light, December, 1863, North Light, November, 1866; Cape Grisnez, France, February, 1869; Souter Point, England, January, 1871; South Foreland, England, with two lights, January, 1872, in the first place in 1858 – 60 by Professor Holmes, and afterward England took the lead in this matter of the adaptation of electric illumination to lighthouse purposes. The Bishop rock light, Scilly Islands, the old Cassiterides of Herodotus, 145 feet high, cost £ 36,559. In the British Isles there are 357 shore lights and 47 floating lights. The Frenc