Feature

Black Magic of Witchcraft Reappears in England

Scientists Begin Occupying Stations for Polar Year Work

In Science Fields

Real “Artificial Silk” Is Promising Possibility

Stomach Ulcers Produced by Protein Starvation

Gland Extract Increases Body Growth but Not Brain

Changing Constellations and Meteors Featured in Skies

War Is Not Human Instinct Prominent Psychologists Hold

Extra Hours of Moon Affect Reproduction of Animals

Front Matter

Rapid Evolution Produces New Insect Species Almost Daily

The Corliss Engine: “A Classic Invention”