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The So-Called "Dreadnought" Craze

Lieut. Shackleton's Antarctic Expedition

To Test Full-Sized Compression Members




An Enormous Induction Coil

By Charles B. Hayward

Floating Lights of Inland Waters

Aerial Defense Artillery

Seaworthiness of Passenger Steamships

Our New 26,000-Ton Battleships

End Versus Center Doors for Exit on Subway Cars

Defects in Motor-Sleighs

Regrading a City by Means of Hydraulic Sluicing

By J. Mayne Baltimore

The Handy Man in the Factory

By K. R. Henry

Handy Man's Workshop

By I. G. Bayley


  • Departments


  • The Heavens in April

  • Index of Inventions

  • Notes and Queries

  • Patents

  • Recently Patented Inventions

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April 03, 1909

The Antidote to Anti-Intellectualism