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Improved High Pressure Alarm

Mining Speculation--Something as Applicable to New York as to London

Lecture Theater Buildings at South Kensington

Patent Crocheted Caps, for Infants

Coloring Seeds for Sowing

A Remedy for Small Pox, by One Who Has Tried It

The Electro-Magnetic Telegraph.--Honor to Whom Honor Is Due

Patent Office Decision

Simons' Safety Hold-Back for Carriages

The Effect of Sound in Buildings, as Influenced by Ventilation

Substituting other Vapors for Steam—Vapor of Liquefied Carbonic Acid

Sulphite of Soda as a Remedy for Small Pox

Compulsory Safety Gages—The Steamboat Owners' Protest

Scientific and Practical Information - February 24, 1872

Japanese Native Steel

The Art of Thinking

The Difference between Benzole and Benzine

How Shall I Introduce My Invention?

Recent American and Foreign Patents - February 24, 1872


  • From the Editor

    Answers to Correspondents

  • Letters

    Correspondence - February 24, 1872

  • Recommended

    New Books and Publications - February 24, 1872

  • Departments

    Business and Personal - February 24, 1872

  • Notes and Queries- February 24, 1872

  • Index of Inventions - February 24, 1872

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