Volume 131, Issue 3
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Features
Super-Streets and Subways Tentative Details of a Traffic Plan Recommended for New York City
The West Point Military Academy
Our Democratic School of Arms, Whose Motto Is Duty, Honor, Country
Tabbing the Speeding Bullet
How Powder Pressures and Velocities of Flight Are Measured
The Spellbinding Kilowatt
Microphones, Amplifiers and Loud-Speakers which Enable the Human Voice to Reach Vast Multitudes
Serving 2200 Dinners at One Time The Role of Electrically-Driven Conveyors in the Modern Banquet Hall
Here and There, September 1924
Our Abrams Verdict
The Electronic Reactions of Abrams and Electronic Medicine in General Found Utterly Worthless
How London is Putting its Mail-Carrying Facilities Underground, Out of the Way of Traffic, in Automatically Operated Subways
Pulp and Paper
What They Are, How They Are Made, and Some of Their Uses
Re-Broadcasting the Broadcast Program
Short-Wave Radio Telephone Transmission and What It Means by Way of Better Programs
Acoustics and Plaster, A New Principle in Concrete Work
What the Other Half Eats
Some Interesting Exhibits from the Foreign Food Stores of a Big American City
Face to Face with Vitamin D, Meteorites
The British Empire Exhibition--II
The Colonial Buildings and Exhibits for India, Australia, Canada and New Zealand
From Raw Cotton and Silver Bullion to Your Snapshot Photographic Film in the Making
Speeding Up the Sluggish Cables
Wired Wireless and a Re-Designed Morse Alphabet for Submarine Cable Communication
Camera to Photograph Cylindrical Surfaces, Scoring Ice by Machine and more
Giant Submarines
What the Naval Architects are Doing in Developing Super-Submersibles
California's Foot-and-Mouth Quarantine, Making the Sun Help the Microscope and more
The Story of Steel--VIII
From the Ingot to the Finished Product--Rolling Steel Rails
The Battleship "Mississippi" Disaster
The Elaborate Precautions Against Premature Ignition or Explosion of the Ammunition
An Advance in Trench-Digging Machinery, A Giant Among Vertical Spillways
Saving a Rotting Concrete Bridge
How Good Cement Was Injected Under Steam Pressure to Take the Place of the Bad
Taking the Ear-Phones Off the Waiting Radio Man, Glow-Light Protection Against Lightning and more
Jewelry from Fish Scales
A New American Industry, the Making of Imitation Pearls