Features
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
Tutenkhamon's Tomb
What This Latest Archaeological Discovery Means in the Light of Earlier Explorations
Taking Nitrogen from the Air
A Wonderfully Fascinating and Invaluable Achievement in Chemical and Electrical Progress
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
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
When the Camera Turns Sculptor
An Ingenious Combination of Magic Lantern, Camera and Carving Machine for Photo-Sculpture
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
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
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
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
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
Mapping from the Skies
How Aerial Photography Is Being Employed to Chart Our Heretofore Inaccessible Coast Lines
Convenience of Bridge and Tunnels Compared, Sounding by Sound
Departments
- 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
