Feature

Frogs of Mexican Forests Learning to Fly and Climb

Boy Scout-Naturalists Map Craters of Volcano

How to Keep Cool

[Photograph]: Telescopic Mast

“Dumb Design” Slows Coming of Truly Modern Automobile

Yale Experiments Show Virus Diseases Carried through Air

Nature Ramblings: Bobwhite

Psychological Tests Refit Unemployed for Better Jobs

People Taller When Prone than When Standing Erect

Front Matter

100,000-Year-Old Woman and Child Found in Hungary

Cosmic Ray Intensity Varies with Change in Latitude