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Stoking the Locomotive by Machine

A Large American-built Mallet-type Locomotive for South Africa

The Manufacture of Hydrogen Gas for Spherical Balloons

Portable Plants for Military Use

Some Notes on the Armstrong Works

A Pioneer in the Development of Modern Ships, Guns, and Armor

Is the Panama Canal Liable to Damage by Earthquakes?

By Charles Davison

Baalbek the Mysterious

In many Respects the most Famous Ruins of Bible Lands

By Harold J. Shepstone

An Apparatus for Automatic Transmission and Reception of Wireless Messages, A New American Flying Boat

By Lucien Fournier

Catalepsy in Insects

Experiments Showing how Insects Pass Periodically into a Trance

By Percy Collins


  • Letters

    Correspondence - December 13, 1913

  • Recommended

    New Books, Etc. - December 13, 1913

  • Departments

    Recently Patented Inventions - December 13, 1913

  • Notes and Queries - December 13, 1913

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