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Lighter Than Air

The Award of the Fourth-Dimension Prize

Longer Piers for Ocean Steamships




Studying the Desert Plant by Experimental Methods

By William Austin Cannon

Improvements in the De Forest System of Wireless Telephony

By Walter Kendall

Development of the Teansatlantic Steamship

The Aeronautic Society's First Curtiss Aeroplane

Los Angeles 200-Mile Conduit Water Supply

The longest artificial water conduit

By Day Allen Willey

Method of Correcting Faulty Acoustic Properties of Public Halls

By the Paris Correspondent of the Scientific American

Combined Life Rail and Gutter for Swimming Pools

Sanitary Milk and Cream Saving Device

Patent Department

Expansion Cutter-Head for Boring Brass

Distributer for Grain Bins

A New Automobile Lock

Oddities in Inventions

Apparatus for Determining Density

Automatic Starting Device for Siphons


  • Departments

    Recently Patented Inventions

  • Index

  • Notes and Queries

  • Patents

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June 19, 1909

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