Feature

Army Seeks New Yardstick to Measure Flyers

New Mineral Discovered with Smallest Crystals

Front Matter

Chickens Are Incriminated as Source of Encephalitis

[Photograph]: “Mass Production” Flying Fortress

Radio Static Is Used to Locate Hurricanes

Infantile Paralysis Rate Unchanged over Nation

Sulfa Drugs May Substitute for Quinine for Malaria

Proper Order of Lessons Would Speed Training

Light Colors Painted on Machinery Improve Seeing

Dropping Two or Three Miles Makes Jumper Think Better

Cosmic Rays Created by Self-Annihilation of Atoms