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Scientific American, Vol. 65, No. 7 (1891) (1891)

leaf 15

An illustration from Scientific American, Vol. 65, No. 7 (1891), 1891, leaf 15
Mining, Ship Building, Marine Engineering, Photography, Technology, Manu- Gate Valve for low THE HORSE'S HOOF.--BY DR. WIL- NEW KODAKS facturing Industries, Sanitary Engineering, Agriculture, pressures, steam, water, liamson Dryden. A very valuable paper on the treat- oils, etc., being simple,… … llustrated with 14 figures. Contained in SCIENTIFIC Patents, etc. AMERICAN SUPPLEMENT, No. 79%. Price 10 cents, We also send, free of charge,a Synopsis of Foreign Pa- To be had at this office and from all newsdealers. tent Laws, sbowing the cost and method of securing and Natural Gas Fuel.…

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