Feature

[Photograph]: Appraised Evidence

First Glances at New Books

Front Matter

X-Rays from Sun Found to Create Radio “Roofs”

Million Volt Generator for Atom Research

Electronic Tides in Air Also Caused by Moon

C.C.C. Workers Prove Value of New Pneumonia Vaccine

City 5,700 Years Old under “Oldest City”

Two Vanished Civilizations Found in South America

Rapid Analysis of Steel Made from Its Waste

Gold Not the Only Money

In Science Fields