Scientific American Magazine Vol 71 Issue 20

Scientific American Magazine

Volume 71, Issue 20

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Features

The Prevention of Noise

The New Cure for Diphtheria, Croup, Etc.

An Improved Locomotive Boiler

A Carriage Wrench

A Cycle Cab

A Sprocket Wheel Improvement

The Manufacture of Burglar Proof Vaults

A Gas Engine for Small Power

Two Arm Derrick-Chicago Drainage Canal

Portable Stone Dressing Machine of the American Pneumatic Tool Company

The Beatrice Antelope in the Zoological Garden in Berlin

To Inventors - November 17, 1894

Departments

Recently Patented Inventions - November 17, 1894

New Books and Publications - November 17, 1894

Index of Inventions - November 17, 1894

Business and Personal - November 17, 1894

Notes and Queries - November 17, 1894

Patents - November 17, 1894