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Aunrecognized Qualities in Charcoal

Electric Signals for the New York Elevated Railways

Gas in Steel and Glass Making

Street Illumination


Trees in Cities

Singular Discovery in Connection with Phosphorescence

A Description of Caucasian Petroleum

Butter Cooler and Water Holder

Miscellaneous Inventions

Improved Lock for Museum Cases

New Microphone

By M. Boudet

Many-Color Printing Press

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

Science for the Modern World