Feature

Psychologists Puzzled over Adaptability of Workers

New Gas Is Discovered High in Atmosphere of the Earth

Existence of All Matter Rests on Intra-Atomic Force

Cause of Scarlet Fever Believed to Be Virus

Ball-and-Socket Joint Found in Dinosaur Skull

Front Matter

Evolution Extended to Include Intelligence as Prime Factor

[Photograph]: 15,000,000 Years Old

Tomato Roots without a Plant Develop Tremendous Pressures

[Photograph]: Perilous Treasure

Mystic Rites of West Africa Revealed to Harvard Scientist

Individuals Changing Sex Neither Man nor Woman