Volume 131, Issue 1
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Features
A New Miracle Mineral
Our Recently Acquired Ability to Fuse Quartz in Quantity, and What This Means to Industry and Science
Cross-Examining the Automobile
What Organized Research Work Is Doing for the Present and Future Automotive Industry
Volcanoes--Or Cosmic Shell-Holes?
A Discussion of the Origin of the Craters on the Moon, and of Other Features of Her Surface
Here and There, July 1924
With the "Limited"
Some Startling Facts and Figures Regarding Our Fastest and Farthest-Traveled Trains
The Problem of the Obelisk
Our Abrams Investigation--X
Two More Blood Specimen Tests and a New Offer of Co-operation From the Electronists
A Still Larger Power Plant
Camping and Sporting Novelties
Repairing the "Shenandoah"
Replacing the Nose Cap and Rebuilding the Stabilizing Fin Restore the Naval Dirigible
Is Tire Retreading a Failure, Packing Paste in Tubes and more
Crop Reporting by Airplane
More Accurate and More Timely Crop Statistics by Means of the Aerial Camera and the Planimeter
Australian Power Projects, Fighting Senility
King Tut-Ankh-Amen's Treasure
Interesting Details of the Work of the Archaeologist as Disclosed in the Carter-Mace Book Just Published
A Novel Irrigation Sprayer, The Railroad Track Highway and more
More Heat From the Pound of Coal
Adapting the Carbureter and Bunsen Burner Principles of Air Control to the Furnace
Vegetables for the Flower Garden
Our Next Psychic
A Preliminary Account of the Case that Now Comes Before Us, as It Appears to the Naked Eye
Effect of Manganese on Plant Growth
Wichita Dam
Completion of Another Big Western Irrigation Project
Diesel-Driven Stern-Wheel Boat, Local Immunity in Infectious Diseases
The Great Lakes--St. Lawrence Deep-Sea Route
Huge Navigational and Hydro-Electric Plan Recommended by the International Joint Commission
Bringing Color Photography Down to the Layman, Social Significance of the Army Intelligence Tests
A British Bureau of Standards, Applying the Yardstick to Radio Waves
John Bull's Parallel to Uncle Sam's Most Famous Technical Establishment
The Earliest Engineers
How the Spider Applies Correct Principles of Cable Construction in the Fabrication of Her Web