Inside the "Graf Zeppelin"
The United States Official Observer on the Monster Dirigible's Flight to America, Tells the Details of Its Construction
Volume 140, Issue 3
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Features
Planes for Private Flying
A Comprehensive Survey of the Aviation Field, as it Concerns the Individual Who Desires to Purchase a Plane for Personal Use
Does Our Universe Rotate?
Accumulated Evidence Indicates that the Whole Galaxy of Billions of Stars Rotates in About 100,000,000 Years
Weighing the Earth From a Submarine
The Purpose and Scientific Significance of the Determinations of Gravity at Sea Recently Given Wide Publicity by the Press
How I Built my Glider
An Amateur Tells of His Successful Experiment in Constructing and Flying a Glider
Camera Shots of Scientific Events, March 1929
Air-Mail Pick Up and Release
The First Detailed Description of a Device Which May Become a Vital Factor in Speeding Up Aerial Transportation
Builders of the Aviation Industry
Back of the Flyers Are the Men Who Are Making of Aeronautics a Giant Industry
What Things are Made of-II
The Paradox of Light; Einstein and the Photoelectric Effect; Peculiar X-Ray Echoes; Photons and Electrons; The Paradox of Particles and Waves
Radio Guides the Airway Traveler
Radio Beacons Provide Increased Safety In Fog and Storm
New York's New Railroad Bus Station
Motor Coach Service, a Permanent Link in a Great Railroad System, Has a Fine New Terminal In Manhattan
Super-High-Speed Alloy
New Tool Metal, Next to the Diamond In Hardness, Solves Many Machining Problems
The Devil Motorizes
A Hades of Iron and Steel, and Assorted Imps, Occupy the Stage
Aluminum on Trial
Cooking Utensils Made of Aluminum Are Shown to Have No Harmful Effects on Food
Seeking the Secrets of Lightning
Science in the Distribution of Fish
One Of Man's Oldest Industries Rejuvenated By the Adoption of Scientific Methods
The Jovian Face Changes
Lake and Land Below Sea Level In North Carolina Is Reclaimed For Farming
Drained Tract is New World Netherlands
Lake and Land Below Sea Level in North Carolina is Reclaimed for Farming