Feature

Front Matter

Scientists Seek out Causes of Person’s Mental “Set”

Earth’s Rarest Elements Held Once Abundant

Spring Fever Really a Disease; Treatment, Cod Liver Oil

Sunburn No Assurance of Rickets Prevention

Analysis of Stratosphere Air Verifies Pre-Flight Estimates

Effects of Alcohol on Mind and Body Summarized

[Photograph]: The Cooling Waters Bring Forth Life

70-Year Life Expectancy Seen for Child of Future

Early Training an Advantage but Maturity More Important

“Go East,” Slogan of First Great American Migration

[Photograph]: Dentist’s Third Hand