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The So-Called "Dreadnought" Craze

To Test Full-Sized Compression Members

Lieut. Shackleton's Antarctic Expedition




An Enormous Induction Coil

By Charles B. Hayward

Floating Lights of Inland Waters

Aerial Defense Artillery

Defects in Motor-Sleighs

End Versus Center Doors for Exit on Subway Cars

Seaworthiness of Passenger Steamships

Our New 26,000-Ton Battleships

Regrading a City by Means of Hydraulic Sluicing

By J. Mayne Baltimore

Handy Man's Workshop

By I. G. Bayley

The Handy Man in the Factory

By K. R. Henry


  • Departments


  • The Heavens in April

  • Recently Patented Inventions

  • Index of Inventions

  • Notes and Queries

  • Patents

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Dwindling Supply. Increasing Demand.

Dwindling Supply. Increasing Demand.

Solving the Water Crisis