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The New Star in Perseus

An Important Telephone Patent Decision

The Slaby System of Wireless Duplex Telegraphy

A New Permanent Phonograph Record

A Triumph of Ingenuity and a Patent with a History

The Pollok Memorial Prize

An Improved Gasoline Automobile

San Gimignano and Its Towers

Trees and Plants of Southern California

By Charles F. Holder

The Paige Typesetting Machine

The Slaby System of Wave-Selective Wireless Duplex Telegraphy

Automatic Ore Unloader

By W. Frank M'Clure

A New Book or Copy Holder for Typewriters

A Pail for Live Bait

A Valve Motion for Small High-Pressure Pumps


  • Departments

    Business and Personal Wants - March 3, 1901

  • Notes and Queries - March 9, 1901

  • Recently Patented Inventions - March 9, 1901

  • Index of Inventions - March 9, 1901

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