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Announcement of Rules for the Gould-Scientific American $15,000 Prize, Lessons of the Zeppelin Airship Disaster, and more

Electricity- July 9, 1910

Engineering- July 9, 1910

Science- July 9, 1910

A Giant Steam Excavator

By Our English Correspondent

The Two Highest Masonry Bridges in the World

By F. Honore

The Government's Money Laundry

By Thomas D. Gannawy

The Wreck of the "Deutschland"

By Cabl Dienstbach

Rules Governing the Competition for the $15,000 Prize Offered, Wanted: Information about Dishonest Patent Schemes

By Edwin Gould

A Colossal Illuminated Advertising Display

An Animated Scene in White and Colored Lights

Novel Electric Towing Locomotive for Canal Locks

By Herbert Brackett

An Improved Boomerang

By Walter Langford

Magic for Amateurs--I

Coin and Handkerchief Tricks

By W. H. Radcliffe

Electric-Lamp Heating and Cooking Devices

By Frank C. Perkins

A Cheap Home-Made Roller

By C. A. Umoselle

Carrying Water with the Help of a Hoop

By A. F. Bishop

Holder for Broken Saw Blades

By T. Fagan

A Convenient Drawing-Board

By Chauncey W. Nieman

Easily Constructed Electric Toaster

By R. H. Cronyn

The Current Supplement, Guiding Signals for Aeronauts


  • Letters

    Correspondence- July 9, 1910

  • Recommended

    New Books, Etc.- July 9, 1910

  • Departments

    Notes and Queries- July 9, 1910

  • Recently Patented Inventions- July 9, 1910

  • Index of Inventions- July 9, 1910

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