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Progress of the Brooklyn Bridge

On Aids to Hearing

Progress of the Brush System of Electric Lighting


Professor Gamgee's Ice Machine

Harvest Figures

Improved Tongs

Steamboats for South American Rivers

Portable Fountain Water Closet

Howe's Cave

By H. C. Hovey

Improvement in Machine Guns

Engineering Inventions - January 15, 1881

The Face in Health and Disease

The Chicago Police Alarm System

A Mysterious Explosion and its Causes

By Joshua Rose

Curious Time Measurers

Mechanical Inventions - January 15, 1881

Agricultural Inventions - January 15, 1881

Cellar for Manufacturing Ice

Miscellaneous Inventions - January 15, 1881

Human Footprints in Kentucky Sandstone


  • Departments

    Recent Inventions - January 15, 1881

  • Business and Personal - January 15, 1881

  • Index of Inventions - January 15, 1881

  • Notes and Queries - January 15, 1881

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January 15, 1881

See the World from a Different Perspective

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