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A Sea-Level Canal at Panama

The Longest Span Bridge in the World

Record Run of a Steam Turbine

Technical Description of the Czarevitch in Action

The Second Extension of the Subway

To Our Subscribers

William Gilson Farlow

By Marcus Benjamin

Moving a Brick House by Water

By G. P. Blackiston

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

A Strange Home

By Charles P Holder

New Apparatus for Champagnizing Wine

A New Form of Apparatus for the Electrolysis of Water

By Alfred Gradenwitz

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...


  • Departments

    The Heavens in January - December 31, 1904

  • Correspondence - December 31, 1904

  • Recently Patented Inventions - December 31, 1904

  • Notes and Queries - December 31, 1904

  • New Books, Etc. - December 31, 1904

  • Index of Inventions - December 31, 1904

  • Patents - December 31, 1904

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