Feature

U. S. Largely Unmapped; Completion of Work Urged

Spores of Fungi Captured in Arctic Upper Air

Sleeps Three Days at Time; Woman Puzzles Doctors

“Shadow” of Earth Explains Cosmic Ray Variation

[Photograph]: Stowaway

Upflowing Sap in Plants Pulls with Force of Tons

New Optical Method Aids Study of Bacteria

Blame for Eel-Grass Disease Laid on One-Celled Animal

Fresh-Water Fish Learn to Live in Sea Water

[Photograph]: Captain of a Whale

In Science Fields

Watch for Eclipse