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Record Run of a Steam Turbine

A Sea-Level Canal at Panama

The Second Extension of the Subway

The Longest Span Bridge in the World

Technical Description of the Czarevitch in Action

William Gilson Farlow

By Marcus Benjamin

To Our Subscribers

A Simple Polarity Indicator for Indicating the Negative Pole of an Electric Current

Moving a Brick House by Water

By G. P. Blackiston

A Strange Home

By Charles P Holder

A New Form of Apparatus for the Electrolysis of Water

By Alfred Gradenwitz

New Apparatus for Champagnizing Wine

The Lebaudy Airship "Le Jaune"

The Mounting of Reptiles for Museum Exhibition

Nissen and his "Fool-Killer No. 3"

By Orrin E. Dunlap Jr.

The Egyptian Papyrus, Past and Present

By Guy E. Mitchell

Business and Personal Wants

Read This Column Carefully, --You will find inquiries for certain classes of articles numbered in consecutive order. If you manufacture these goods write us at once and we will send you the name and address of the party desiring the information. In every ease it Is necessary to give the number of the inquiry


  • Departments

    The Heavens in January - December 31, 1904

  • Correspondence - December 31, 1904

  • Recently Patented Inventions - December 31, 1904

  • Notes and Queries - December 31, 1904

  • Index of Inventions - December 31, 1904

  • New Books, Etc. - December 31, 1904

  • Patents - December 31, 1904

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December 31, 1904