Radio Charts the Upper Air
Published by permission of Major General George S. Gibbs, Chief Signal Officer, United States Army.
A Gallon of 'Gas' from a Gallon of Oil
The Stage Goes "Air-Minded"
Another Peking Skull Discovered
How Pluto's Orbit was Figured Out
Television Needs New Ideas--and Less Ballyhoo
Glass Tubing By The Mile
How Many Minutes of Play in the Average Football Game?
The Story of Glozel--a Chapter in Credulity
By-Products from Industrial Wastes
The Young Giant: Natural Gas Fuel
The Sick May Ride in Pullmans
The Technician Talks About the Talkies
Birds Have Natural Slotted Wings
Across the Editor's Desk, November 1930
Back of Frontispiece, November 1930
The Cork Oak Gives Up its Valuable Outer Bark
Our Point of View, November 1930
Now You Can Buy Insects for 10 Dollars a Million, New Photo Flash Lamp and more
Current Bulletin Briefs, November 1930
Better Mailing Container Sought, U. S. Endorsement is Falsely Claimed and more