Volume 153, Issue 6
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Features
No Super War Gas!
Ideal War Gas May Never be Found, Requirements and Limitations, Nations Still Rely on Wartime Combat Chemicals
Another Step Toward Highway Safety
A Planned Express-Way, Overhead Crossings, Pedestrian Subways and Overpasses, An Example Worthy of Attention by City Planners Elsewhere
Energy From Matter
How Einstein's Principle is Verified, Stupendous Energy Revealed, But Unavailable Because of Low Efficiency of Transmutation
The Breath of Life—at Your Service
Smoke, to You, is One Thing - to the Fireman Quite Another, He Takes It Seriously, Knows Its Dangers, A Pleasant Death, Anyway
Perpetual Ice in a Lava Bed
Wide Spectrum Lines and Small Stars
Colorado River's Newest Dam
Will Divert Water for California, Gates to Control Severest Floods, Concrete Arch Type
Prehistoric Burials of Tepe Gawra
Twenty-three Tomb Burials Excavated, Apex of Stone Craftsmanship and Goldsmith's Art, Over 5000 Years Old, Who Were the Gawrans?
Not Just Glass
Glass Age is 6000 Years, Last 20 Have Seen Most Progress, Important New Uses, Architectural, Industrial, Scientific Types of Class