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The Proposed Naval Appropriation

Salt Water Fire Protection for New York City

Electricity in Mines

Emission of N-Rays by the Human Body, Especially the Muscles and Nerves

Fleets in the Far East--An English Review of the Position of Russia and Japan

By Archibald S. Hurd

Submarine Sound Telegraphy

Safety Hook Provided with Counting Mechanism

A Powerful Compressed Air Clamp

Novel Appliances for Fighting Fire

Modern Flour Milling

The Disabled Russian Cruiser "Novik."

The Parasite of the Oak Pruner

By S. Frank Aaron

Early Armorclads

By C. Field

Business and Personal Wants


  • Departments

    Science Notes - February 27, 1904

  • Legal Notes - February 27, 1904

  • Recently Patented Inventions - February 27, 1904

  • Notes and Queries - February 27, 1904

  • Index of Inventions - February 27, 1904

  • Patents - February 27, 1903

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