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Artillery Experiments at Spezia

Progress in Medical Ethics

A Snake Trap Wanted

The Care of the Insane

How Steam Engine Valves are Finished

The Lambertville Iron Works Automatic Cut-Off Engine

Improved Band Saw

Improved Cotton Chopper

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

Aerial Navigation

Agricultural Inventions

Engineering Inventions

Miscellaneous Inventions

Mechanical Inventions

Communications Received


  • Departments


  • Recent Inventions

  • Notes and Queries

  • Business and Personal

  • Index of Inventions

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