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Features

Artillery Experiments at Spezia

A Snake Trap Wanted

The Care of the Insane

Progress in Medical Ethics

How Steam Engine Valves are Finished

The Lambertville Iron Works Automatic Cut-Off Engine

Improved Band Saw

Improved Cotton Chopper

Aerial Navigation

Apparatus for Removing Grease, Air, and Impurities from Feed Water

Agricultural Inventions

Miscellaneous Inventions

Mechanical Inventions

Engineering Inventions

Communications Received

Departments

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    Correspondence

  • Recent Inventions

  • Business and Personal

  • Index of Inventions

  • Notes and Queries

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February 10, 1883

Think Outside the Gift Box