Feature

Foundation Bill Stymied

Mouse-Eating Frogs Added to National Museum

South Dakota Manganese Deposits Are Low-Grade

April Sunshine Was More Intense than Summer Rays

Track “Hot” Mosquitoes

Importance of Forestry

Fast-Moving Sky Object Will Be Back in 1951

Pressure Harms Science

Front Matter

[Photograph]: Enemy Aircraft Interceptor

Algae for Food Explored

Study Why Men Succeed