rientific Auttrion. THE J. L. MOTT IRON WORKS T H E UNEQUALED FOR ANY DUTY. Ice Machines Refrigerating Apparatus. Estimates and Circulars upon Application. WM. A. HARRIS. PROVIDENCE R. I. (PARK STREET) HARRIS-COULISS ENGINE from 10 to 1000 H. P. COLUMBIA BICUCLE. THE POPE l(12F'G (20 BOILER COVERINGS. ``AIR SPACE' WIRE ROPE HOISTING ENGINES. THE LUDLOW VALVE M'F'G CO. ROCK DRILLS & AIR COMPRESSORS. INGERSOLL ROCK DRILL CO. 1 1-2 Park Place New York. Lehigh Valley E1IE IL WHEEL CO. Weissport Pa. Double Screw Parallel. Leg Vises. EXETER MACHINE WORKS New York Ice Machine Company Machines Making


rientific Auttrion. THE J. L. MOTT IRON WORKS T H E UNEQUALED FOR ANY DUTY. Ice Machines Refrigerating Apparatus. Estimates and Circulars upon Application. WM. A. HARRIS. PROVIDENCE R. I. (PARK STREET) HARRIS-COULISS ENGINE from 10 to 1000 H. P. COLUMBIA BICUCLE. THE POPE l(12F'G (20 BOILER COVERINGS. ``AIR SPACE' WIRE ROPE HOISTING ENGINES. THE LUDLOW VALVE M'F'G CO. ROCK DRILLS & AIR COMPRESSORS. INGERSOLL ROCK DRILL CO. 1 1-2 Park Place New York. Lehigh Valley E1IE IL WHEEL CO. Weissport Pa. Double Screw Parallel. Leg Vises. EXETER MACHINE WORKS New York Ice Machine Company Machines Making ICE AND COLD AIR. 83 John Street New York. IRON WORKS Chicag Ill. Ahead of all Competition. TEN SIZES FOR HAND USE. Weighing from 21 to 51 lbs. THREE SIZES FOR HORSE POWER. GRAHAM EMLEN & PASSMORE Patentees and Manufacturers 631 Market St. Philadelphia Pa. DWELLINGS AND COUNTRY SEATS. DOUBLE PITMAN PRESSES. ICE AT PER TON. MACHINISTS' TOOLS. ASBESTOS LIQUID PAINTS ROOFINC ROCK DRILLS STEARNS SAW MILLS. STEARNS MANUFACTURING COMPANY Erie Pa. BATTERIES NEW HAVEN MANU VACUUMING CO. THE HOWARD MANUFACTURING CO. Manufacture and Introduce Patented Novelties THE DIADEM COMB .40000 PATENTS SOL ENEUJOHNSON & CO.'S MI. TenthandLom DELAMATER IRON WORKS C. H. DELAMATER & CO. Proprietors No. 10 Cortlandt Street New York N. Y. MECHANICAL PURPOSES. PAYNE'S AUTOMATIC ENGINES. d c THE SCOVILL 'Pop' Safety Valve SIMPLE. RELIABLE. DURABLE BOSTON MASS. MillStones and Corn Mills. NEW YORK BELTING AND PACKING COMP'Y. EMERY WHEELS. standard BELTING PACKING and HOSE. Steam Fitters' & Plumbers' Supplies. STURTEVANTS' VAN BLOWERS. ROOFING. Jarvis Furnace Co. COLD PENS. PRINTING INKS. STEAM BOILER KORTING'S UNIVERSAL INJECTORS LAWN MOWER. MAST. FOOS & CO., scientific american, 1881-05-14


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