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

Signaling and Talking Through Space

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

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

Mechanical Equipment of the Farm

Latest developments in agricultural machinery and practical suggestions for the farmer

The Current Supplement

Substitutes for Belting in Germany