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Scientific American, Vol. 29, No. 3 (July 1873) (1873)
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wire is paid out as of the hull is from three eighth* to half an inch thick, and the boat moves, and of course there is no crew on board. tacked vesselremaining on the surface for a very protracted in some portions this is increased. As we explained, in a period, The two apertures or ports, sho wn… … nities for testing the "aggres- In 1870, at the request of the sive" instrument. The hull of Viceroy of Egypt, a boat was THE PORTER TORPEDO. © 1873 SCIENTIFIC AMERICAN, INCPatents · Balloon · Boiler · Feet · Improved · Consists · Scientific American · Iron · Telegraph cable · Science record · Hot air · John wise · Address munn · Trimming die · Steam boilers · Sewing machine · Trade catalogs
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