Feature

Amateur Astronomers Can Make Vital Contributions

In Science Fields

Antarctic Ho!

Development Corporations Proposed for Alaska

C. A. A. Chairman Writes Open Letter to Young Pilots

Cosmic Ray Experts Sail for Round-World Test Trip

Survival of Superstition Laid to School Methods

Nature Ramblings: Short-Lived: Many-Seeded

Nazis Seek Purer Iron Because Steel Is Arsenic “Poisoned”

First Glances at New Books

Front Matter

Great Coral Reefs in Pacific Have Clams Four Feet Long