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Features

The Balance Dynamometer

Ammonia in the Air

The Rights of Investigators

The Planet Vulcan

Soft vs. Hard Iron

A False Alarm

The West as a Field for Manufactures

The Wallingford Tornado

The New Divinity

Pneumatic Engines for Street Cabs

Captive Balloon of 1878

Astronomical Notes

By Berlin H Wright

New Oscillating Valve

The Needham Musical Cabinet

New Rein Holder

The Speaking Flame

By Geo. M Hopkins

The Mesquite

Communications Received

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  • Notes and Queries

  • New Books and Publications

  • Index of Inventions

  • Patents

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August 31, 1878

See the World from a Different Perspective

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