for BUILDING EDITION, SCIENTIFIC AMERICAN to turn round on itscenter. This motion may be given is a mere suggestion of an idea. and SUPPLEMENT, $9.00 a year. To foreign countries, $11.50 a year. to it either by the tide acting on float boards, attached The contract with the Navy Department for the… … Caving machines, Potter’s table records show that TOPS os caceint cin Sena eebato nes nee 146 to the body of the battery, by sails raised on its ex- he applied for a patent May 27, 1862, and that it was Cements of rubber and gutta- Peters, Prof. C. H. F.*............ 150 Photography-eikonogen…
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