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The Panama Canal Treaty

Combining the Airship and the Aeroplane

Great Steamship Combine

Sanitary Condition of Street Cars

Steering with Twin-Screw Engines

Lord Kelvin--England's Greatest Living Scientist

New Airship Under Construction for the British War Office

Powerful Locomotive for Suburban Service

The Growth of the Transatlantic Steamship

Underground Electric Railways Abroad

By Frank C. Perkins

Mechanism for Predicting the Tides

By Day Allen Willey

The Sisal Industry in the Bahamas

By S. Harbert Hamilton

Zuni, an Ancient City of the Pueblos

Patent Department

Automatic Drive-Gate


Oddities in Inventions

Adjustable Claw-Bar

Business and Personal Wants


  • Departments

    The Heavens in May

  • Recently Patented Inventions - May 3, 1902

  • Index of Inventions - May 3, 1902

  • New Books, Etc. - May 3, 1902

  • Notes and Queries - May 3, 1902

  • Patents - May 3, 1902

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