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With the Editors, May 1923

Our Transportation Industry, May 1923

The Burglar and the Alarm

From the Simple Gong Alarm of Yesteryear to the Elaborate Electric Protective System of Today

By Edward H. Smith

Tutenkhamon's Tomb

What This Latest Archaeological Discovery Means in the Light of Earlier Explorations

By T. George Allen

Taking Nitrogen from the Air

A Wonderfully Fascinating and Invaluable Achievement in Chemical and Electrical Progress

By Littell McClung

Extinct Races of Ape-Like Man

Tracing the Evolution of Man and the Apes from a Common Ancestor All illustrations copyright, American Museum of Natural History

The Washington Conference Battleship

Translating 35,000 Tons Displacement into Hull, Guns, Armor and Speed

What One Thousand Horsepower Means in Power Producers on Land and on Water and in the Air

A Man-Made Amphibian, New Type of Timber Joint-Plate and more

Our Psychic Investigation in Europe--I

Interesting Psychological and Physical Phenomena Observed at a Sitting with a Scotch Medium

By J. Malcolm Bird

The Georgetown Bridge Over the Potomac, Jacking Out the Stumps

Islands in the Making

Creating Beautiful Florida Home Sites by Means of Enormous Suction Dredges

Better Lungs for Miners, The Milk-Container Car

Foreign Foods in American Cities

Some of the Curious Comestibles that Have Immigrated to Our Shores

By L. Lodian

When the Camera Turns Sculptor

An Ingenious Combination of Magic Lantern, Camera and Carving Machine for Photo-Sculpture

By P. J. Risdon

Sectional Safes of Concrete and Iron, Phosphorescent Light of Fireflies and more

Feeding the Soils

What the Farmer Has to Put In to Pay for What He Takes Out

By Arthur L. Dahl

Making the Airplane Radiator and Wing in One, Equipping the Soaring Plane with a Small Engine

An Old Friend in New Dress

The Present Uses for Turkish Boxwood, and the Search for Substitutes

By Samuel J. Record

Big-Wheel Log Hauling, Jacking Out the Stumps

Carbon Formation in Engine Cylinders

Why Grade Crossing Accidents?

Causes of Automobile Accidents at Grade Crossings as Established by a Railroad's Investigation

By S. R. Winters

The Los Angeles Coliseum-One of the World's Greatest Structures, Athletics and Oxygen Supply and more

The Valley of Ten Thousand Smokes

Short Resume of the Report on the Remarkable Mount Katmai Exploration in Alaska Photos Copyrighted by National Geographic Society

The Handwriting on the Sky--the Most Recent and Compelling Method of Advertising, The Transport of Organic Substances in Plants and more

By Alexander Klemin

Hudson River Bridge at Bear Mountain

A Solution of the Motor Traffic Problem Across the Upper Hudson River

A High-Pressure Tank to Cure the III Effects of Pressure, A Novel Surgical Tool and more

From Battlefield to Road Jobs

What the States Have Done with the Surplus War Supplies Turned Over to Them

By D. H. George

Mapping from the Skies

How Aerial Photography Is Being Employed to Chart Our Heretofore Inaccessible Coast Lines

By George H. Dacy

Convenience of Bridge and Tunnels Compared, Sounding by Sound


  • Departments

    Our Point of View, May 1923

  • Inventions New and Interesting, May 1923

  • The Service of the Chemist, May 1923

  • The Heavens in May, 1923

  • The Motor-Driven Commercial Vehicle, May 1923

  • Recently Patented Inventions, May 1923

  • Science Notes, May 1923

  • Mechanical Engineering Notes, May 1923

  • Radio Notes, May 1923

  • Electrical Notes, May 1923

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