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The Biggest Car Dumper in the World

American Ship-Operating Program, British And German Gunnery, and more

Is the Dirigible Outstripping the Airplane ?

Recent Progress in Lighter-Than-Air Craft Which Has Brought That Type to the Forefront of Aviation

A New British Port

Proposed Dock in Falmouth Harbor That Could Accommodate 1,000-Foot Liners

By Eric A. Dime

Signaling and Talking Through Space

A Broad Introduction to the Present Status of Wireless Telegraphy and Telephony

United States Chemical Warfare Service—II
The Sciences

United States Chemical Warfare Service—II

The Great Gas Plant at Edgewood Arsenal With a Capacity of 200 Tons Per Day

Admiral Sims in the Team-Work for Victory

How the Admiral Stood Out for Consolidation as Against Mere Coöperation

British Munitions

A Glimpse at a Picture Too Big for a Single Canvas

By C. H. Claudy

Mechanical Equipment of the Farm

Latest developments in agricultural machinery and practical suggestions for the farmer

By Harry C. Ramsower

The Current Supplement

Substitutes for Belting in Germany


  • Departments

    Correspondence - April 12, 1919

  • Inventions New and Interesting - April 12, 1919

  • Recently Patented Inventions - April 12, 1919

  • New Books, Etc. - April 12, 1919

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