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Harvard Observatory and the Henry Draper Memorial

Railroad Men's Building

Magazine Rifles

Exhibition of Train Telegraphy

Photographic Notes - October 15, 1887

Valve Gear for Oscillating Engines

An Adjustable Pitch Screw Propeller

An Improved Cutter Head

An Improved Fifth Wheel

An Improved Household Ash Sifter

An Improved Signaling Apparatus

International Exhibition at Glasgow

Machines for Making Packing Boxes

The Regal Walnut Moth

Agricultural Invention - October 15, 1887

Engineering Inventions - October 15, 1887

Miscellaneous Inventions - October 15, 1887

To Inventors - October 15, 1887

Departments

  • Recommended

    New Books and Publications - October 15, 1887

  • Departments

    Business and Personal - October 15, 1887

  • Index of Inventions - October 15, 1887

  • Notes and Queries - October 15, 1887

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October 15, 1887

Complex Causes. Alternative Solutions.

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