Volume 165, Issue 1
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Features
Our Search for the Supernatural--IV
Did Sir Oliver Lodge Write the Message?
A Bottle-Neck Breaker
Welding Presents Advantages of Speed and Low Cost to Machine Tool Industry
Portable Substation, Protection, and more
Transformer on Wheels for Emergency Use
Wartime Astronomy
A Mere War Does Not Sidetrack European Astronomers from Regular Work
Radio Runs a Transit
Accurate Ocean-Floor Topographic Maps Made Through Acoustical Surveys
Oil Wells, Cosmic Rays
Sciences Beat Hunches in Discovering New 1940 Fields
Pilots, Pilots, More Pilots
Encouragement of Glider Clubs Would Provide Ample Raw Material for Military Needs
Green-Bouses for Bombers
Plastic Enclosures Reduce Plane Weight, Hence Increase Speed or Bomb Capacity
More Power to the South
Development of South Carolina Engineering Project Will Provide for New Industries
Sampling, Mine Locomotives
New Apparatus for Taking Sea Bed Samples
Television Today
Commercial Operation, Large-Screen Projection, and Color Are Recent Developments
Quiet Offices, Stutterers, and more
Precision Filing, Thermostat, and more
Reciprocating Hand Tool For Semi-Skilled Labor
Helicopter Records
Rotary Aircraft Operates as Seaplane Or Amphibian Helicopter
Dive Bomber, Self Sealing Tanks
America Produces Outstanding Navy Plane