Good Times for Mechanics. Manganese Bronze. 1845. PUBLISHED WEEKLY AT $3 20 1 00 publishers anticipate a still larger circulation. The Scientific American Supplement is issued weekly. Every number contains 16 octavo pages with handsome 10 cents. Sold by all news dealers throughout the country. Scientific American Export Edition. Commercial trade and manufacturing announcements of leading houses. nouncements published in this edition at a very moderate cost. lation in all commercial places throughout the world. Address M UNN & CO. 37 Park Row New York. NEW YORK SATURDAY JANUARY 31 1880
Good Times for Mechanics. Manganese Bronze. 1845. PUBLISHED WEEKLY AT $3 20 1 00 publishers anticipate a still larger circulation. The Scientific American Supplement is issued weekly. Every number contains 16 octavo pages with handsome 10 cents. Sold by all news dealers throughout the country. Scientific American Export Edition. Commercial trade and manufacturing announcements of leading houses. nouncements published in this edition at a very moderate cost. lation in all commercial places throughout the world. Address M UNN & CO. 37 Park Row New York. NEW YORK SATURDAY JANUARY 31 1880. Contents. (Illustrated articles are marked with an asterisk.) Mechanics good time for 64 Machinery ignorance regarding 66 Motor for the house (8) 15 Nickel plating () 75 Patent bills two more 65 Potat uses of the 72 Professors German 65 Pyroxylene. solvents for 69 Scallop fisheries Long Island 72 Shells of Pompeii 69 Signaling at sea 74 Silk. to paint on (5) 75 Soda manufacture of 67 Sound ngs. deep (4) 75 Stains nitrate of silver 66 Tay bridge disaster 65 Teeth. how to keep clean 73 Telegraph wire. noise from (12) 75 Torpedo investigations 74 Ventilator new 67 Wells artesian 66 For the Week ending January 31 1880. I. ENGINEERING AND MECHANICS French Hot Air Stoves and Air and Hot Water Chimneys. 8 figures. M. Bolo de Sevray's beating apparatus HILL. The five competing furnace systems at the Cincinnati In Walker TWID Furnace. The Fisher Furnace. The Eureka Fur nace Attachment. The Price Furnace. The Murphy Furnace. An uncommonly valuable article 3334 Ring Spinning. Recent improvements. 5 figures 3387 An instructive statistical report 3387 Exhibition of Applied Science Paris. Illustrative description The Lontin System of Electric Lighting. 4 figures. The exciting machine. The light machine. The Voltaic arc regulator. The Lamps 3389 the improved instrument 3390 Coating Iron with Copper 3394 Alloys of Gallium with Aluminum 3394 Intensifying Gelatine Negatives. The most efficien
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