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Aunrecognized Qualities in Charcoal

Street Illumination

Gas in Steel and Glass Making

Electric Signals for the New York Elevated Railways

A Description of Caucasian Petroleum

Trees in Cities

Singular Discovery in Connection with Phosphorescence


Butter Cooler and Water Holder

Miscellaneous Inventions

Improved Lock for Museum Cases

Many-Color Printing Press

New Microphone

By M. Boudet

Decisions Relating to Patents

The Obelisk in Central Park

Improved Bench Clamp

Improved Extension Table

Jersey Bull Diavolo

The Sea Cat

Natural History Notes

Communications Received


  • Departments

    Recent Inventions

  • Correspondence

  • New Inventions

  • Business and Personal

  • Notes and Queries

  • Index of Inventions

  • New Books and Publications

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February 05, 1881