Allen's Useful Companion HANCOCK INSPIRATOR Full Report. HANCOCK INSPIRATOR CO. 52 CENTRAL WHARF BOSTON MASS. Valuable Practical SCIENTIFIC BOOKS. The Practical Draughtsman's Book of Indus trial Designs and Machinist's and Engineer's m M STEAM PUMPS. 239 Broadway 83 Water St. Boston. Price list issued Jan. 1 1879 with a reduction exceed ing 30 per cent. SHEPARD'S CELEBRATED II. L. SHEPARD az CO. Cincinnati Ohio. IRON SCREW WIND POWER; CIVIL AND MECHANICAL ENGINEERING h e e R at the Polytechnic In u stitte. RAPID ADDITION! Wonderful Invention! Batavia N. Y. THE Water Wheel Co


Allen's Useful Companion HANCOCK INSPIRATOR Full Report. HANCOCK INSPIRATOR CO. 52 CENTRAL WHARF BOSTON MASS. Valuable Practical SCIENTIFIC BOOKS. The Practical Draughtsman's Book of Indus trial Designs and Machinist's and Engineer's m M STEAM PUMPS. 239 Broadway 83 Water St. Boston. Price list issued Jan. 1 1879 with a reduction exceed ing 30 per cent. SHEPARD'S CELEBRATED II. L. SHEPARD az CO. Cincinnati Ohio. IRON SCREW WIND POWER; CIVIL AND MECHANICAL ENGINEERING h e e R at the Polytechnic In u stitte. RAPID ADDITION! Wonderful Invention! Batavia N. Y. THE Water Wheel Co. I CHALLENGE THE WORLD THE DRIVEN WELL. WM. D. ANDREWS & BRO. STRUCTURAL IRON. Baker Rotary Pressure Blower. other. WILBRAHAM BROS. FOR SECOND-HAND ENGINES Address HARRIS IRON WORKS Titusville Pa. PHOSPHOR-BRONZE BEARINGS 0 PUMP-RODS Apply t THE PHOSPHOR-BRONZE SMELTING CO. Limited. NEW YORK BELTING AND PACKING COMP'Y. JOHN H. CHEEVER Treas. NEW YORK. cents. EMERY WHEELS. SPARE THE CROTON AND SAVE THE COST. Driven or Tube Wells 50 Federal St. Boston Mass. PENS. BLAKE'S STONE AND ORE BREAKER AND CRUSHER. J. A. FAY & CO'S WOOD WORKING MACHINERY Perfect in Workmanship Naves labor ard of Excellence. OLD ROLLED sHArrING. ;1E'4PS: Easthampton Mass. OF THE FOR 1879. VOLUME XL—NEW SERIES. 52 Numbers a Year. MUNN & CO. 37 Park Row New York. Row New York., scientific american, 1879-08-30


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