Feature

Polar Regions May Warm in Recovery from Last Ice Age

Carbon Dioxide Called Normal Stimulant of Breathing Center

Incas Anticipated Moderns in Frost-Fighting Method

Stone Age Men Used Wooden Tools

First Glances at New Books

Aardvark Comes to Buffalo Museum

Star Velocities in the Line of Sight: “A Classic of Science”

In Science Fields

Electric Refrigerators Credited with Reducing Smallpox

Fight for Life between Blue Dye and Cyanide Described

Lokombitsika Suggested as Cheaper Rival to Shellac

Standard Proposed for Scurvy-Preventing Vitamin