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Scientific American, Vol. 40, No. 21 (1879) (1879)

leaf 7

An illustration from Scientific American, Vol. 40, No. 21 (1879), 1879, leaf 7
upports the the best effect as regards speed. To demonstrate this some glass 1s equivalent to the focus of the lens, so that no adjust- trials were recently made with a model boat 5 feet in length ment will be required. The square aperture in the handle fitted with an ordinary screw driven by… … A part of the deadwood, 11¢ inch long, was insurance companies to inquire if he has not DEAL’S then removed from the stern, and the screw got a cesspool leaking into his well, or un- was placed 2 inches from the end of the trapped pipes beneath his basins and closets ? More persons die of zymotic…

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