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Costly Improvements in New York City

Forty-Four-Mile Electrification on the West Shore Railroad

American Yachting Season of 1907

Converting Music into Electricity

A New Hydroplane Boat

The Most Powerful Express Locomotive Ever Built

Sound Signals for Mariners: An Inventive Field Which is not Overworked

By C. H. Claudy

The Magnitude of Victoria Falls

Inauguration of Work on the Catskill New York Water Supply

The Vessels and Guns of the Old Navy, 17751850

By Charles Oscar Paullin

Bertillon's New System of Anthropometry

By Jacques Boyer

A Novel Apparatus for Demonstrating Atmospheric Pressure

By Alfred Gradenwitz

Notes and Queries

Hints to Correspondents


  • Departments

    The Heavens in July

  • Recently Patented Inventions

  • Index of Inventions

  • New Books, Etc.

  • Index

  • Patents

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