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Features

Diamond Cutting--A New Industry in New York

Specific Heat

Crude Petroleum for Fuel and for Illuminating Gas

Camphor

The Fair of the American Institute

Rescue of the Remaining Survivors of the Polaris

The Planet Mars--Is it Inhabited?

A Simple Tree Protector

Self-Tightening Drill Chuck

Calfskin Tanning in Europe

The Great Exposition--Letter from United States Commissioner Professor R. H. Thurston

The Danbury Drill Chuck

Improved Plow Attachment

Automatic Railroad Gate and Signal

Recent American and Foreign Patents - October 4, 1873

Answer to Correspondents - October 4, 1873

Communications Received - October 4, 1873

Departments

  • Letters

    Correspondence - October 4, 1873

  • Recommended

    New Books and Publications - October 4, 1873

  • Departments

    Notes and Queries - October 4, 1873

  • Business and Personal - October 4, 1873

  • Index of Inventions - October 4, 1873

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October 04, 1873

Think Outside the Gift Box