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Features

Edison's New Dynamo-Electric Machine

Improvements in the Silvering of Mirrors

Pharaoh's Serpents--Are They Dangerous Toys?

Ice Roads and Railways on Ice

Should a Baby Be Fat?

The Tehuantepec Ship Railway

Electric Illumination at Menlo Park

Electric Light Good for the Eyes

Machine for Riveting the Tubes of Galloway Boilers

Improved Apparatus for Upward Percolation

Improved Bench-Plane

Tobacco-Leaf Cutting Knife

Bottle Cock for Effervescing Liquids

Mechanical Inventions - January 22, 1881

Novel Steam Boiler

On Magic Mirrors

By MM Bertin and Dubosq

New Radial Drill

Miscellaneous Inventions

Improved Steam Fog Horn

Curious Fact in Natural History

By C. F. Holder

Fresh-Water Medusæ

Natural History Notes

Engineering Inventions - January 22, 1881

Transactions of the American Society of Engineers

Decisions Relating to Patents

United States Circuit Court.....

Communications Received

Departments

  • Departments

    Recent Inventions - January 22, 1881

  • Correspondence - January 22, 1881

  • New Inventions - January 22, 1881

  • Notes and Queries - January 22, 1881

  • Business and Personal - January 22, 1881

  • New Books and Publications - January 22, 1881

  • Index of Inventions - January 22, 1881

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January 22, 1881

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