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Prof. Dewar's Experiment with Liquid Hydrogen

The Fourth Annual Cycle and Automobile Exhibition

Copyright of Photographs

Philippine Architecture

The Verdict in the Tank Collapse Case

Wine Stored Underground

Our Import Trade for 1898

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

Glass Sponges

By Charles Frederick Holder

An Insect Breeding in Crude Petroleum

By L. O. Howard


  • Letters

    Correspondence - February 4, 1899

  • Departments

    The Heavens in February 1899

  • Recently Patented Inventions

  • Index of Inventions - February 4, 1899

  • Business and Personal - February 4, 1899

  • Notes and Queries - February 4, 1899

  • Patents - February 4, 1899

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