Feature

American Airships Protected from Explosion by Helium

Front Matter

Atomic Projectiles Sought to Release Energy of Atom

$5,000 Prize to Prof. Babcock for 40-Year Old Invention

In Science Fields

“A Classic of Science”: Fourier’s Theory of Heat

First Glances at New Books

Air Pressure Varies with Sun Spots in Monsoon Regions

Mice Crowded in Boxes Show How Slums Affect People

Use of Rubber Paving Brick Reported to Road Congress

Nature Ramblings: A Sarcophagus of Pearl

Possible Paralysis Epidemic Depends on Next Reports