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A Canal by Lake and Locks

New Conceptions in Astronomy

Does a Water Famine Threaten New York City?

The Voyage of the "Discovery"

Novel Methods of Determining the Amount of Atmospheric Dust

By Alfred Gradenwitz

The Bates Plan for Lock and Lake Canal at Panama—II

Braun's New Method of Directing Wireless Messages

By A. Frederick Collins

The Soldier-Mountaineers of Italy

By William G. Fitz Gerald

Giant Creatures of Prehistoric Times

Refrigeration with Electric Motive Power

By Alfred Gradenwitz

New Automobile Speed Records in Florida

Business and Personal Wants


  • Departments

    Recently Patented Inventions

  • Notes and Queries

  • New Books, Etc.

  • Index of Inventions

  • Patents

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Science or SciFi?

Science or SciFi?

Vanishing Particles. Spooky Action.