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The Harbor Defense Ram Katahdin

Progress of Long Distance Telephony

The Crowning Achievements of the Telephone

The Annual Report of the Commissioner of Patents

The Equitable Printing Telegraph

A Safety Valve for Water Gauges

An Improved Railway Coach

An Improved Fire Escape

An Improved Drilling Machine

Atmospheric Pressure

Notes on the Sugar Industry in Cuba

By Humphrey J. Kiely

The Fontainebleau Proving Grounds


  • Letters

    Correspondence- February 18, 1893

  • Recommended

    New Books and Publications- February 18, 1893

  • Departments

    Business and Personal- February 18, 1893

  • Recently Patented Inventions- February 18, 1893

  • Notes and Queries- February 18, 1893

  • To Inventors- February 18, 1893

  • Index of Inventions- February 18, 1893

  • Patents- February 18, 1893

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February 18, 1893