Feature

Sensory Reactions of People Found to Be Widely Different

Three Planets Together from November 17 to 26

Infantile Paralysis Selects Special Type of Children

Instrument Indicates When Chicle Tree Should Be Tapped

Airplanes Spot Breaks in Electric Power Lines

Nature Ramblings: Turkey

First Glances at New Books

Front Matter

Late Division of Embryo Causes Differences in Twins

New Scientific Council to Standardize Colors

Enzyme in Liver Makes Vitamin A from Carotene

New Radium Find in Canada May Break Belgian Monopoly