. Bulletin. Science. rf"^0 Figure 2.—Foucault's are-light regulator of 1847. From E. Alglave and J. Boulard, The Electric Light, New York, 1884, p. 62. ment-makers Deleuil. Archereau, and Duboscq during the 1840' After a few private demonstrations in 1841, Louis J. Deleuil showed, in 1843, that he could light the Place de la Concorde by electricity (fig. 1).' The 200 Bunsen cells he placed below the statue of Lille produced a discharge between charcoal electrodes in an evacuated glass cylinder that was situated on the knees of the statue. The soft glow penetrated the slight fog on the
. Bulletin. Science. rf"^0 Figure 2.—Foucault's are-light regulator of 1847. From E. Alglave and J. Boulard, The Electric Light, New York, 1884, p. 62. ment-makers Deleuil. Archereau, and Duboscq during the 1840' After a few private demonstrations in 1841, Louis J. Deleuil showed, in 1843, that he could light the Place de la Concorde by electricity (fig. 1).' The 200 Bunsen cells he placed below the statue of Lille produced a discharge between charcoal electrodes in an evacuated glass cylinder that was situated on the knees of the statue. The soft glow penetrated the slight fog on the evening of the demonstration, and the experiment was pronounced a success. Deleuil had been assisted in the trial by Henri A. Archereau who had used a similar method to light his dining 2 "Eclairage," La Grande Encyclopedie, Paris, , vol. 15, pp. 341-346; Eug4ne Defrance, Histoire de t'eclairage des rues de Paris, Paris, 1904; Louis Figuier, Les Applications de la science i I'Industrie et aux arts en 1855, Paris, 1856, pp. 326—336. 3 Les Mondes, 1863, vol. 2, p. 452; LIllustration, 1843, vol. 2, p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off
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