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Copyright of Photographs

The Fourth Annual Cycle and Automobile Exhibition

Prof. Dewar's Experiment with Liquid Hydrogen

Our Import Trade for 1898

Wine Stored Underground

The Verdict in the Tank Collapse Case

Philippine Architecture

A New Way of Constructing Drawbridges

A Water-Feeding Device for Grinding-Wheels

An Improved Steam-Boiler

The Hoadley-Knight Compressed Air Motor

Investigations at the Keely Laboratory

The New Panama Canal

An Insect Breeding in Crude Petroleum

By L. O. Howard

Glass Sponges

By Charles Frederick Holder


  • Letters

    Correspondence - February 4, 1899

  • Departments

    The Heavens in February 1899

  • Recently Patented Inventions

  • Business and Personal - February 4, 1899

  • Index of Inventions - February 4, 1899

  • Notes and Queries - February 4, 1899

  • Patents - February 4, 1899

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February 04, 1899