Scientific American, Volum 50

261 Broadway acid Address MUNN apparatus applied ASBESTOS attached battery boiler bolt Car coupling cast cast iron circular color Company connected construction Contained in SCIENTIFIC copy cost covers cylinder device diameter drill electric engraving fastener feet filter frame friction furnace give glass Greek fire heat holder horse power Hot Blast Illustrated improved inch invention inventor iron Lathe lever light lock machine Machinery Magic Lanterns magnetic manufacture mechanical ment metal miles mill newsdealers obtained PACKING paper patented Phila Philadelphia pipe plate plow postage postal order pounds present pressure Price 10 cents pulley Railway Railway signal right ascension roller SCIENTIFIC AMERICAN SUPPLEMENT screw Screw Threads Send for catalogue Sewing machine shaft side sorghum spring steam engine steel Street sugar surface telephone tion tube valve vessel wheel wire wood York