Scientific American Magazine Vol 117 Issue 25

Scientific American Magazine

Volume 117, Issue 25

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Features

The Trench System of Defense vs. The Pill-Box System, Comparison of Army and Navy Efficiency, and more

[the front-page article shows an illustration of a generic German bunker]

Automobile- December 22, 1917

Science- December 22, 1917

Industrial Efficiency- December 22, 1917

The second page contains photographs of the harbor of Halifax after the explosion of the munitions ship "Mont Blanc"

Recording Sound on Motion-Picture Film

A Simple Method of Synchronizing Sound Waves and Images in Talking Pictures

The Battle Control for the Rifle

A Neglected Means of Increasing Infantry Efficiency Many Fold

Zeppelin, Aeroplane and Parachute

The Present Status of War by and on the German Dirigible

Carl Dienstbach

Our Destroyers in the War Zone

An Exciting Service Which Calls for Initiative, Courage and Endurance

Our Great Need for Toluol and a New Way to Make It, Process for Using Spoiled Potatoes

[toluol is used for making high explosives]

Departments

Correspondence- December 22, 1917

Inventions New and Interesting- December 22, 1917

Recently Patented Inventions- December 22, 1917

New Books, Etc.- December 22, 1917