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The Balance Dynamometer

The Planet Vulcan

Ammonia in the Air

Soft vs. Hard Iron

The Rights of Investigators

The West as a Field for Manufactures

The New Divinity

A False Alarm

Pneumatic Engines for Street Cabs

The Wallingford Tornado

Captive Balloon of 1878

Astronomical Notes

By Berlin H Wright

The Needham Musical Cabinet

New Oscillating Valve

New Rein Holder

The Speaking Flame

By Geo. M Hopkins

The Mesquite

Communications Received


  • Departments

    Notes and Queries

  • New Books and Publications

  • Business and Personal

  • Index of Inventions

  • Patents

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