Feature

In Science Fields

Amateur Astronomers Can Make Vital Contributions

Antarctic Ho!

First Glances at New Books

Front Matter

Skull of Biggest Monster Arrives in America

Only Radiation from Sunspots Causes Ionization of $text{F}_{2}$ Layer

Cosmic Ray Experts Sail for Round-World Test Trip

Navy’s Huge Test Basin Is Now Nearing Completion

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

Development Corporations Proposed for Alaska

Nature Ramblings: Short-Lived: Many-Seeded