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Features

The Harbor Defense Ram Katahdin

The Crowning Achievements of the Telephone

Progress of Long Distance Telephony

The Annual Report of the Commissioner of Patents

The Equitable Printing Telegraph

An Improved Railway Coach

A Safety Valve for Water Gauges

An Improved Drilling Machine

An Improved Fire Escape

Atmospheric Pressure

Notes on the Sugar Industry in Cuba

By Humphrey J. Kiely

The Fontainebleau Proving Grounds

Departments

  • Letters

    Correspondence- February 18, 1893

  • Recommended

    New Books and Publications- February 18, 1893

  • Departments

    Notes and Queries- February 18, 1893

  • Business and Personal- February 18, 1893

  • Recently Patented Inventions- February 18, 1893

  • Index of Inventions- February 18, 1893

  • To Inventors- February 18, 1893

  • Patents- February 18, 1893

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Why Do Facts Fail?

Why Do Facts Fail?

Deconstructing Denial