Feature

Army Seeks New Yardstick to Measure Flyers

Sex Glands Found Linked with Brain’s Growth

Scientists See New World Whenever the War Is Won

[Photograph]: Tree-Size Tobacco

Comet Surprises Astronomers by Increase in Brightness

Stars Have Atmospheric Shells like the Sun’s Corona

Front Matter

Sex Hormone Unique to Man Discovered by Chemist

Nature Ramblings: Unlisted Casualties

British Astronomer Presents New Theory of Solar System

Report Typhus Vaccine Trial Going Forward on Large Scale

From Electron to Universe by New Multiplication Table