Feature

American Thanksgiving Plants Fifty Years after Columbus: “A Classic of Science”

New Drug Treatment Gives Hope for Relieving Insanity

In Science Fields

Pavement Stop Signs Have Letters Shaped Wrongly

Clouds Make Day Bright When Sun Is Partly Hidden

1931 Leonids Best in Years, Many Astronomers Report

Action of Steel under Stress Revealed in Writing on Sand

Coal in Small Doses Stimulates Plant Growth

Lean Indians to Eat Surplus Park Buffaloes

Artificial Limbs Made from Seamless Metal Tube

Front Matter

Artificial Gamma Radiation Approximates Cosmic Rays