Features
Gasoline Miracles
Higher Octane Aviation Fuels, But Not for Hitler
Pyrheliometer, Element 61, and more
New Instrument Measures Heat of Sun's Rays
Testing With 'Lightning Bolts'
Mighty Generators Provide Two Million Kilowatts To Prove Efficiency of Power-Line Guardians
Recap to Keep em Rolling
Old Tires and Retreading Play Important Roles in America's Wartime Transportation Picture
Reclaimed, Wire Salvage, and more
Metals From Mill Chips and Scale
'Water, Water, Everywhere'
Multiple-Purpose Central Valley Project in California Involves Huge Dams, Five Canals
New Pleiades
Recent Investigations of Proper Motions Have Added Two Dozen More Stars to the Famous Cluster
Shockless Surgery
Ice Anesthesia, Boon to Aged in Limb Operations and a Promise for War Wounded in the Field
Again Guilty?, Pronounciation, and more
Do Flies also Spread Infantile Paralysis?
Torpedo!
Mechanics of the "Tin Fish" That is Writing a Terrifying Record of World-Wide Destruction
Success, All-Metal Yacht, and more
Workman's Suggestions Speed Production
Glass Guns for Victory
Soil Testing in Gardens and on Farms Can Aid in Keeping Food Producing Machinery in Order
Bread Protection, Microscope, and more
By Addition of Mold-Inhibiting Agent
Demagnetizer, Induction Hardening, and more
For Equipment Used In Production
The Thunderbolt
Although Complete Specifications for New Interceptor Cannot be Told, It Promises to be Most Effective
Plywood, Civil Air Patrol, and more
Utilized As Float, Conserves Aluminum
Departments
50 Years Ago, April 1942
- From the Editor
Our Point of View, April 1942
- Recommended
Our Book Corner, April 1942
- Departments
Industrial Trends, April 1942
Camera Angles, April 1942
Current Bulletin Briefs, April 1942
Telescoptics, April 1942