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Scientific American Magazine Vol 100 Issue 22

Scientific American Magazine

Volume 100, Issue 22

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Features

Comparison of Steam and Producer-Gas Marine Plants

Defense Against Dirigibles

To Keep the Peace

Station Announcers on Trains

Aeronautics

Engineering

Science

The New Knippels Bridge at Copenhagen

By our English Correspondent

Fluid Compression of Steel Ingots

J. F. S. Springer

The New United States Battleship "Mississippi"

The Manufacture of French Postage Stamps

Jacques Boyer

Signaling to Mars with Mirrors

Slipping of Wheels on Curves

Some More Lunar Superstitions

Can-Filling Machine

Patent Department

Poultry-Picking Machine

Self-Cleaning Brush

Departments

Correspondence - May 29, 1909

The Heavens in June

Recently Patented Inventions - May 29, 1909

Patents - May 29, 1909

Index of Inventions - May 29, 1909