Volume 165, Issue 3
You are currently logged out. Please sign in to download the issue PDF.
Features
How Good Are America's Warplanes?
Analysis Shows Superiority in Factors That Count
Hall Tractor, Hall Truck
High Speed, Maneuverability, Armor Plate Protection in New Army Reconnaissance Car
Infra-Red Does the Trick
Radiant Energy From an Efficient Source is Doing Industrial Jobs Faster and Better
For Checking Water Purity
Electrical Equipment Gives Constant Check, Sounds Warning or Automatically Adjusts
Vanishing Oil, Salvage, and more
Designed for Lubricating High-Temperature Bearings
The Sun's Faint Edge
How Three Dutch Astronomers Verified a Theory of the Sun with Simple Apparatus
Telltale Tracks
Human Footprints in Hardened Rock in Central America Reveal a Dramatic Flight
The Silver Clamp
Experiments in Progress Give Some Promise of a Remedy for High Blood Pressure Ills
Forestallment, Sight, and more
Epileptic Fits Deliberately Produced Electrically
Our Search for the Supernatural-VI
With The Aid Of Psychic Powers A Table Is Tilted. A Pendulum Clock Is Stopped
Across Panama by Rood
Concrete Surface and Bridges Sufficiently Strong to Carry Safely a 55-Ton Tank
Safe at Work
Record of Employees In Petoleum Industry
Plain Water's Unplainness
Recent Research Reveals Some Odd New Facts About Common, Ordinary Simple Water
A False Paradise for Pests
Intensive Investigation of Control Methods for Man's Multitudinous Living Enemies
Flying Suits, Man Slumped, and more
Wired for Comfort at All Temperatures
Inserted Blades, Efficiency, and more
Standard Tools Speed Production
Washington Notional Airport
Designing Engineers Have Created the World's Finest Port for Air Transport Lines
Flight Training, Baltimore Bomber, and more
Man-Made Gale For Gliding