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A Seventy Thousand Horse Power Central Station

Prison Association of New York Exhibition

The Licensing of Engineers

Lord Kelvin

The Largest and Fastest Paddle Steamer in Great Britain

By A. J. Sinclair

A Gas Main Stopper

The Chainless Bicycle

The Steel Pipe and Tube Industry

A Novel Hand Camera

The Color Changes in Lizards

By C. F. Holder


  • Letters

    Correspondence - October 23, 1897

  • Recommended

    New Books, Etc. - October 23, 1897

  • Departments

    Recent Inventions - October 23, 1897

  • Notes and Queries - October 23, 1897

  • Business and Personal - October 23, 1897

  • Index of Inventions - October 23, 1897

  • Recently Patented Inventions - October 23, 1897

  • Patents - October 23, 1897

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