Volume 145, Issue 1
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Features
Riding With the Signal in the Cab
Quick-Freezing Solves Food Problems
Keeping the Stock Exchange Fit
Airplanes Land Blind--Guided by Radio
A Splintered Planet?
The National Aircraft Show
The Biblical Deluge A Fact
Amateur Astronomy in Pittsburgh
Television Now on Schedule
Science in Search of Oil
A Familiar Truck Becomes A Locomotive
Professional Methods in Amateur Archeology
Prepared under the auspices of the Committee on State Archeological Surveys of the Division of Anthropology and Psychology, National Research Council: Fay-Cooper Cole, Chairman of the Division (1929-30), and Carl E. Guthe, Chairman of the Committee. Reprinted by permission, with minor authorized changes.