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Features

A Good Rule--Doubt Must be Resolved in Favor of the Inventor

Removal of Snow from Streets

Direct use of Steam as Motive Power of Aerostats

The Atmosphere of Caves

Propulsion for Ocean Steamers by the Steam Jet

Improved Car Coupling

Improved Harrow

The Glycerine Barometer

Combined Hook and Buckle

Telephone Transmitter

Mercury Bubbles

By T. O'conor Sloane

Improved Sugar Machinery

Cotton Chopper

Fall of a Great Water Tower

Recent Types of the Gatling Gun

The Fishing Frog

Trichechus Americanus--Manatee

By W. O. Ayres

Agricultural Inventions

Special - December 25, 1886

Miscellaneous Inventions - December 25, 1886

Mechanical Invention

Engineering Inventions

To Inventors - December 25, 1886

Departments

  • Recommended

    New Books and Publications - December 25, 1886

  • Departments

    Notes and Queries - December 25, 1886

  • Business and Personal - December 25, 1886

  • Index of Inventions - December 25, 1886

  • Index - December 25, 1886

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December 25, 1886

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