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Personal Impressions of the Panama Canal, Cement Troubles in the New Tubes and more

Fatal Accident to Calbraith P. Rodgers, The First Hydo-Aeroplane Meeting at Monaco

The Diesel Oil-engine and its Industrial Importance

The Simplest and Most Efficient of Motors

By Rudolf Diesel

The New Element "Niton"

By Johns Hopkins and Leonard Keene Hirshberg

The Safety of Smokeless Powders

By Robert G. Skerrett

Girdling the Globe by Wireless

The Navy Chain of Wireless Stations

By Dudley Harmon

The Automobile Sanitary Apparatus of Paris

Modern Methods of Street Cleaning in the French Capital By the Paris Correspondent of the Scientific American

Panama—Personal Impressions of the Work on the Canal—I

Controlling the Chagres River by the Gatun Dam and Spillway

By J. Bernard Walker

What Inventors are Doing - April 20, 1912

Simple Patent Law; Patent Office News; Inventions New and Interesting

Steinmetz May Smoke, A Wireless Tuning Station


  • Recommended

    New Books, Etc. - April 20, 1912

  • Departments

    Correspondence - April 20, 1912

  • Recently Patented Inventions - April 20, 1912

  • Notes and Queries - April 20, 1912

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