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Scientific American Magazine Vol 39 Issue 9

Scientific American Magazine

Volume 39, Issue 9

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Features

The Balance Dynamometer

The Rights of Investigators

The Planet Vulcan

Ammonia in the Air

Soft vs. Hard Iron

The Wallingford Tornado

The West as a Field for Manufactures

The New Divinity

A False Alarm

Pneumatic Engines for Street Cabs

Captive Balloon of 1878

Astronomical Notes

Berlin H Wright

New Rein Holder

New Oscillating Valve

The Needham Musical Cabinet

The Speaking Flame

Geo. M Hopkins

The Mesquite

Communications Received

Departments

Notes and Queries

New Books and Publications

Business and Personal

Index of Inventions

Patents