Scientific American Volume 85 Number 10 (September 1901) . American Sheet Steel Company Battery Park Building New York Manufacturers of all varieties of Iron and Steel Sheets Black and Galvanized Plain and Painted Flat, Corrugated and V Crimped Apollo Best Bloom Galvanized Sheets W. Dewees Wood Companys Planished Iron W. Dewees Wood Companys Refined Iron Wellsville Polished Steel Sheets. Variable SpeedCountershaft for securing any speed withoutcbange of belt or loss of time. Es-pecially adapted for all kinds of Iron-working Machinery, Iron Lathes,Planers, Boring Mills, Shapera, etc.;Cement Mac

Scientific American Volume 85 Number 10 (September 1901) . American Sheet Steel Company Battery Park Building New York Manufacturers of all varieties of Iron and Steel Sheets Black and Galvanized Plain and Painted Flat, Corrugated and V Crimped Apollo Best Bloom Galvanized Sheets W. Dewees Wood Companys Planished Iron W. Dewees Wood Companys Refined Iron Wellsville Polished Steel Sheets. Variable SpeedCountershaft for securing any speed withoutcbange of belt or loss of time. Es-pecially adapted for all kinds of Iron-working Machinery, Iron Lathes,Planers, Boring Mills, Shapera, etc.;Cement Mac

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Scientific American Volume 85 Number 10 (September 1901) . American Sheet Steel Company Battery Park Building New York Manufacturers of all varieties of Iron and Steel Sheets Black and Galvanized Plain and Painted Flat, Corrugated and V Crimped Apollo Best Bloom Galvanized Sheets W. Dewees Wood Companys Planished Iron W. Dewees Wood Companys Refined Iron Wellsville Polished Steel Sheets. Variable SpeedCountershaft for securing any speed withoutcbange of belt or loss of time. Es-pecially adapted for all kinds of Iron-working Machinery, Iron Lathes,Planers, Boring Mills, Shapera, etc.;Cement Machinery, ExperimentalMachinery—in fact all kinds of ma-chinery requiring a change of speed.With it a large increase and a bettergraie of work can be produced. %W~ Send for handsomely illustratedcatalogue S. A. free. REEVES PULLEY CO. COLUMBUS. IND., U. S. A. GASOLINE ENGINEVAPORIZORS at reasonable prices, float feed type of original construc-tion, insuring reliable results or money refunded. J. F. DENISON, New Haveii, C01111. THE EQUITABLE IS THE STRONGEST LIFE COMPANY IIMTHE WORLD ITS POLICIES ARE THE GOVERNMENTBONDS OF LIFE ASSURANCE WRITE FOR FULL PARTICULARS the EQUITABLE life Assurance society OF- THE UNITED STATES 120 Broadway, New York J.W.ALEXANDER, President d.H.HYDE, Vice President.