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Congress and the Isthmian Canal

Fireproof Dock Construction

The Chief Constructor of the United States Navy

The Patent and Trade Mark Commission Agree on a Bill

Letters from Peary

Sugar Inventions Wanted

Failure of the Display of Leonids

Registration of United States Patents and Trade Marks in Cuba

International Congress of Railways at Paris

The Brunt Improved Regulating Incandescent-Lamp Socket

A Novel Electro-Magnetic Brake for Street Cars

American Coal Briquettes

The Serpollet Steam Automobile

The First-Class Battleship "Wisconsin"

Bird's-Eye View of the Pan-American Exposition

Separation of the Brazilian Thoraco-Xiphopagous Twins

III. Simple Electric Motor

By George M. Hopkins

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    Recently Patented Inventions - December 8, 1900

  • New Books, Etc - December 8, 1900

  • Notes and Queries - December 8, 1900

  • Index of Inventions - December 8, 1900

  • Business and Personal - December 8, 1900

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December 08, 1900

Beyond XX and XY

Biology. Identity. Equality.