Volume 134, Issue 2
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Features
The Transmutation of Elements
Using the Quartz Mercury Vapor Lamp, Two Dutch Scientists Claim to Have Changed Lead into Mercury and Thallium
What Is Life?
The Puzzling Phenomenon Called Life Is Being Studied by Means of a Working Model of a Living Plant Cell
The Sacrificial Pool of the Maya Indian Maidens
Mirror Making for Reflecting Telescopes
Girdling the Earth With a Radio Beam
Marconi's Invisible Shaft to Encircle the Empire on Which the Sun Never Sets
Neptune and the Postman
Canned Radio Telegraphy
With Phonographic Records the Army Is Learning Modern Methods of Signaling
What Are Shooting Stars and Meteorites?
The Vast Majority of These Brilliant Objects Are Smaller than a Pea
Two Brilliant Planets, Jupiter and Venus, in Conjunction
Shall We Throw Away our Soil?
The Soil Is Our Most Valuable Asset. Are We Treating It Right?
The Standing Stone Forests of Wyoming
An Epoch-Making Engineering Achievement
The Laying of High-voltage Submarine Power Cables Across the Mississippi
Mapping Unknown Alaska
A Geological Survey, Filled with Romance, Danger and Hardship
Electrical Research Applied to the Phonograph
A New Method of Reproduction Brings a Sense of Realism to Phonographic Presentation
Ice Flowers
Phantom-like Blossoms Appear at the Roots of Plants and Disappear with the Morning Sun