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The Cooper Hewitt Interrupter

Rapid and Slow Construction of Public Works

Proposed Subway and Elevated Extension in New York City

Radium-Its Extraordinary Properties

By C. W. Kanolt

The Current Supplement

New Method for Cutting Asphalt Pavement

The Production of Low Temperatures

The Injured Hull of the United States Cruiser "Brooklyn"

The Construction of the Asyut Dam; Nile Irrigation Works

Our London Correspondent, From Notes by Sir Benjamin Baker, Engineer of the Works

Tripping Hoist for Well Buckets

By Rev. Lewis Bond

Venomous Serpents—III

By Randolph I Geare

Two Simple Fastening Devices

A New Insulating Material

Rein Support

Device for Preventing the Switching of Cows' Tails

Patent Department

Adjustable Surface Cultivator

Business and Personal Wants


  • Departments

    The Heavens in March - February 28, 1903

  • Legal Notes - February 28, 1903

  • Recently Patented Inventions - February 28, 1903

  • Index of Inventions - February 28, 1903

  • Notes and Queries - February 28, 1903

  • New Books, Etc. - February 28, 1903

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