Feature

New Type of Vacuum Tube Has Unusually Long Life

Recovers from Insanity within Fifteen Minutes

[Photograph]: Prehistoric and Modern

Europe’s Disaster Not Yet Realized by Americans

Air-Plus-Troops Tactics Operate in Limited Depth

Story of “Baboon Boy” Now Thrown in Doubt

Not Science, but Philosophy and Religion Failed World

First Glances at New Books

First Glances at New Books

Front Matter

Nature Not Game of Chance Prof. Einstein Contends

Parachute Troops May Be Psychological Weapon