Volume 149, Issue 3
You are currently logged out. Please sign in to download the issue PDF.
Features
Latest Photographs from Persepolis
The Carolina Bays--are they Meteor Craters?--I
Our Second Test of Telepathy
A Request for Data on Apparitions
Is Sexual Abstinence Harmful?
Learning to Use the Instrument
Where Astronomers when they Die
The Lessons of 50,000,000 Miles of Flying
A Real 'Electric Eye'
"Mass Production" Welding
Flameless, Arcless Process Produces Thousands of Welds an Hour Under the Supervision of One Man