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Scientific American, Vol. 88, No. 21 (1903) (1903)
leaf 10
f a parabolic reflector sur- collected, and render it unfit for use in cooking or on rounded by a drum and supported the table. Mr. John Keller, of Ottoville, Putnam on a bracket. Two forms of bracket County, Ohio, overcomes this objection in the follow- are provided—one adapted to be at- ing… … time, heat can be strongly felt ata © 1903 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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