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Progress of Experiments with Kites in 1897-98 at Blue Hill Observatory

By S. P. Fergusson

The Yucca Plant in Venezuela

Tobacco in Korea

From Djibouti to Harrar

The “Ballot” Shaft Coupling and Propeller

Portable Hand-Punching and Shearing Machines

Memorandum on the Mineral Resources of the Philippine Islands

By George F. Becker

Artificial Silk in Germany

Selected Formulæ

Miscellaneous Notes

Engineering Notes

Siberian Silhouettes

The Toy-Industry of Nuremberg

Apparatus for Nickel Plating Numerous Small Objects at a Time

A new Acetylene Lamp

Heating by Coal Tar

The Economic Status of Insects as a Class

The Bad Language of Wild Birds

By Charles A. Witchell

Portable Electric Propeller for Boats

Repairing a Screw Shaft


  • Departments

    Patents - March 4, 1899

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