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Conditions of the Battleships after the Long Cruise

Ornamentation in Lake-Dwellers' Habitations

Futile Criticisms of the Lock Canal

The Turbine the Complement of the Compound Engine




Kaemper's Discoveries in the Mammoth Cave

By Horace C. Hovey

A Wonderful Model of the Strasburg Clock

Feeding the American Army

By B. R. Winslow

Sulphate of Copper as a Fungicide

The “North Dakota's” Turbines

A Rack and Pinion Problem

Col. J. J. Astor's Vibratory Disintegrator

An Ingenious Device Which Manufactures Prouducer Gas From Peat and the Patent Covering Which will be Given to the Public

The Sigafoos Tunnel Machine

By Rowland Ashford Phillips

Injury to the Turbines of the Scout "Salem"

Latrodectus--The Poisonous Spider

By Alexander Petrunkevitch

The Flying Gurnards

By Charles F. Holder


  • Departments

    Index of Inventions - May 22, 1909

  • Recently Patented Inventions - May 22, 1909

  • Patents - May 22, 1909

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