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The Pennell and Zimmer Dovetail and Shaping Machine

Chemical Experiments for Youthful Readers

State Education and the Labor Question

Removal of Oil From Wool

Albert's Method of Securing Flag Halyards

Wrought Iron and Steel Posts

The Phosphoric Light

Variance between Hydrostatic and Steam Pressure in Boilers

Ice Harvesting on the Hudson

Drying by Cold

The Education of the Deaf and Dumb

What Shall be Done with the Models at the Patent Office?

Production of Steam in Boilers

The Navy of the Future

Imperfection in Lamps, Wicks, Fluids

Religion and Science - February 10, 1872

Scientific and Practical Information - February 10, 1872

Editorial Summary - February 10, 1872

A New Scientific Work

Will You Favor Us?

Recent American and Foreign Patents

How Shall I Introduce My Invention?


  • From the Editor

    To our Readers - February 10, 1872

  • Answers to Correspondents - February 10, 1872

  • Letters

    Correspondence - February 10, 1872

  • Recommended

    New Books and Publications - February 10, 1872

  • Departments

    Notes and Queries - February 10, 1872

  • Business and Personal - February 10, 1872

  • Index of Inventions

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