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Features

The Surplus Patent Funds

Progress of Patent Law

Subaqueous Gold Mining

Diagonal Avenues in Cities

The Technological, Industrial, and Sanitary Museum of New South Wales

Another “Mysterious” Boiler Explosion

By Joshua Rose

American Industries--No. 65

Continuous-Slide Lantern

Miscellaneous Inventions

Locomotive Steam Crane

Improved Air Brake

Helmet Crests

The Navies of Europe--Ten Years' Progress in Ships of War

Agricultural Inventions

Departments

  • Departments

    New Inventions

  • Recent Inventions

  • Business and Personal

  • Notes and Queries

  • New Books and Publications

  • Index of Inventions

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February 12, 1881

Confronting Common Wisdom