Volume 164, Issue 6
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Features
Our Search for the Supernatural--III
Demonstrations of Rappings and Ectoplasm Explained
A Skin Game in Metallurgy
Longer Life and Greater Productivity Given to Tools and Machines by Heavy Chromium Plate
New Brazing Method Cuts Costs
Fusion Process at Arms Plant is Applicable Throughout Many of the Metal Industries
Foil Substitute, Matting, and more
Mud Huts to Skyscrapers
Archeology Shows that Many Modern Building Methods are Thousands of Years Old
Folsom Man
The Shape of the Earth
New Determination of Its Polar Flattening, with a Saner Proposal for Submarines
Mad Dog--Mad Man
Most Modern Treatment for Hydrophobia is the Easily Obtained Simple Treatment
Pregnancy Test, Slit-Lamp, and more
Trucks for Defense
The Trucking Industry is Mobilizing its 4,500,000 Trucks for Emergency Transport
Badges
Bird Dogs of the Oil Field
Gamma Rays Often Point to the Presence of Oil in Old Worked-Out Wells
Polarizer
To Find 1000
A Pinhead-Sized Bit of Radium Can't Long Hide from a Physicist in a Ten-Acre Lot
Tektites, Puzzle of Science
The Origin of these Odd Objects Remains a Mystery Despite Years of Dispute
Lamp, Magnifier, and more
"Winged Warfare"
A Message to the Nation from Airmen Who Know What Military Aviation Needs