Feature

Stars Have Atmospheric Shells like the Sun’s Corona

Nature Ramblings: Unlisted Casualties

Book on Race Problem Refutes Nazi Doctrines

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