Feature

American Airships Protected from Explosion by Helium

Atomic Projectiles Sought to Release Energy of Atom

Front Matter

[Photograph]: Strange Planes in Formation

Nature Ramblings: Chokeberry

Sun’s Ultraviolet Light Flares Cause Magnetic Storms

“A Classic of Science”: Man’s First Glimpse of Microbes

Ancient Art Forgery Dug up in Italy

Use of Rubber Paving Brick Reported to Road Congress

Possible Paralysis Epidemic Depends on Next Reports

Mice Crowded in Boxes Show How Slums Affect People

Air Pressure Varies with Sun Spots in Monsoon Regions