Scientific American Magazine

Higher Octane Aviation Fuels, But Not for Hitler

New Instrument Measures Heat of Sun's Rays

Mighty Generators Provide Two Million Kilowatts To Prove Efficiency of Power-Line Guardians

Old Tires and Retreading Play Important Roles in America's Wartime Transportation Picture

Metals From Mill Chips and Scale

Multiple-Purpose Central Valley Project in California Involves Huge Dams, Five Canals

Recent Investigations of Proper Motions Have Added Two Dozen More Stars to the Famous Cluster

Ice Anesthesia, Boon to Aged in Limb Operations and a Promise for War Wounded in the Field

Do Flies also Spread Infantile Paralysis?

Mechanics of the "Tin Fish" That is Writing a Terrifying Record of World-Wide Destruction

Workman's Suggestions Speed Production

Soil Testing in Gardens and on Farms Can Aid in Keeping Food Producing Machinery in Order

By Addition of Mold-Inhibiting Agent

For Equipment Used In Production

Although Complete Specifications for New Interceptor Cannot be Told, It Promises to be Most Effective

Utilized As Float, Conserves Aluminum