Feature

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

Egyptian “Dust Devils” Reported to Be Orthodox

Valuable Objects Found in Cemetery of Unknown Race