Feature

Earth Built of Wedges New Geological Theory

Human Mind Resists New Ideas

Greater Tornado Damage Seen as Population Increases

How Mental Ability Varies with Age and Race

Hybridization of Man and Ape to Be Attempted in Africa

New World Made for Plants at Boyce Thompson Institute

Show Farmers How to Cure Sweet Corn Quickly

Hastens Growth of Cuttings by Using Oxidation Agents

Auto Tire Forced Rubber Research

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Doctors’ Charges Change with Medical Progress

Intelligent Students Show Most Speed