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Features

A Seventy Thousand Horse Power Central Station

The Licensing of Engineers

Prison Association of New York Exhibition

Lord Kelvin

The Largest and Fastest Paddle Steamer in Great Britain

By A. J. Sinclair

A Gas Main Stopper

The Chainless Bicycle

A Novel Hand Camera

The Steel Pipe and Tube Industry

The Color Changes in Lizards

By C. F. Holder

Departments

  • Letters

    Correspondence - October 23, 1897

  • Recommended

    New Books, Etc. - October 23, 1897

  • Departments

    Recent Inventions - October 23, 1897

  • Business and Personal - October 23, 1897

  • Recently Patented Inventions - October 23, 1897

  • Index of Inventions - October 23, 1897

  • Notes and Queries - October 23, 1897

  • Patents - October 23, 1897

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October 23, 1897

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