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Features

Edison Dynamo Electric Light Machine

Obach's Galvanometers

Natural History in Public Schools

The Making of Steel Pens

Marengo Cavern

By H. C. Hovey

Petroleum for Heat

Automatic Circuit Closer

Novel Sewing Machine Shuttle

Counterbalance

Deep Rock Cuts Near New York

Wagon Tongue Support

Fire Arm

The Cable Cars of the Brooklyn Bridge

The Crowned Pigeon

Pole and Shaft for Vehicles

The Champion Steam Trap

Agricultural Inventions

Miscellaneous Inventions

Mechanical Inventions

Engineering Inventions

Departments

  • Departments

    Correspondence

  • New Books and Publications

  • Business and Personal

  • Index of Inventions

  • Notes and Queries

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October 13, 1883

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