Feature

Vulcanization of Rubber: “A Classic Invention”

Improved X-Ray Methods Developed at Mayo Clinic

First Glances at New Books

Astronomy Medal Awarded to Universe Maker

Public Gets Benefit of Poison Gas Patent

In Science Fields

Uncle Sam’s Laundry That Has No Customers

[Photograph]: Highway through a Mountain

Evolution Depends on “Health Level”

Congress Provides for Fight on Spread of Spotted Fever

Many Sunspots Reported by Mt. Wilson Astronomers

11,000 Miles per Second Is New Heavenly Speed Record