ispensable to the architect and builder, TAxperirrieijtal S^cience, RADIOPHONY.—BY ALEXANDER and to persons about to build for themselves they will Graham Bell. A lecture delivered In the Sibley College find the.work suggestive andfmost useful. They contain course. Contained in Scientific American… … Tests, Boilers, Engines, Pipe By Geo. M. Hopkins. Cordage, Drilling Tools, etc. Illustrated catalogue, price lists and discount sheets on request. 740 Pages. 680 Illustrations. KADII OF CURVATURE GEOMETRI- callv Determined^—A paper by Prof. C. W. MacCord, PRICE, by mail, postpaid, S4.00 bc.D.,…
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