The Electric Light Applied to Lighthouseillumination
THEELECTRIC LIGHT APPLIED TO LIGHTHOUSEILLUMINATION. 77 March 25, 1879. JOHN FREDERIC BATEMAN, F.R.SS.L.&E., President, in theChair. MELBOURXEINTERFATIONAL EXHIBITION OF 1880. MR. BATEMAN,President, expressed the hope that the members of the Institution would assist the promoters of this Exhibition in carrying out its objects, particularly by ensuring- an adequate re- presentation of British Civil Engineering, in its widest sense, in the Southern hemisphere. No.1,639.--“ The Electric Light applied to Lighthouse Illumi- nation.” By JAMESR’ICHOLAS DOUGLASS,M. Inst. C.E.1 FKOMthe first establishment of lighthouses in this country, prior to A.D. 53, untillate in the last century, the luminaries were generally wood or coal fies. In 1696 tallow candles were adopted in the first Eddystone; and about 1563 rude flat-wick oil lamps were employed at the Liverpool lighthouses, in combination with reflectors surfaced withsmall facets of silveredglass, thesug- gestion of TVilliam Hutchinson, a master mariner of that port. The invention of Argand, a citizen of Geneva, about 1780, of the cylindrical wick lamp, provided a more efficient means of illu- mination, which was soon generally adopted in conjunction with silvered paraboloidal reflectors ;and these again havebeen replaced by the largeconcentric-wick lamps and lenses of Augustin Fresnel. Coal-gas as a luminary for lighthouses was proposed in 1823 by Signor Aldini, of Milan. It has been for many years in use in some harbour lights in this country, where gasworks are near at hand. In June, 1865, it was applied to the first order seacoast lighthouse at Howth Bailey, Dublin Bay, by the Commissioners of Irish Lights, on the system of Mr.
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