Volume 166, Issue 6
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Features
"Pop-Gas" Aids War Drive
Harmless Vapor Balks Saboteurs, Saves War Plants
Plane Detector, Blackout Bulbs
Cement Aids Oil Production
Deep Oil Wells are Controlled and Conserved by Application of High-Speed Cementing Process
Rotating Galaxies
That the Spiral Nebulae Rotate is Now Beyond a Doubt. Our Own is Not Much Larger than Others
Rubber Facts That Don't Stretch
A Systematic Survey of Minor Emergency Sources of Natural Rubber in the United States
From the Ground Up
Our Chemical Industry Had the War Time Advantage of Starting Practically from Scratch
To Replace Copper, Eyes of Defense, and more
Harnessing the Sun
Research on the Practical Problem of Power and Heat from the Sun A Progress Report from M. I. T.
Funnels, Refrigerated, and more
Sugar, Beware of Cadmium, and more
Clean?, Sand Blasting, and more
Airport Capacity
Post-War Possibilities
Extensive Growth Forecast in Employment, in Both Manufacturing and Service Branches of Aviation