Scientific American Magazine

Aircraft of the United States Navy

Development Cost Comparisons Reveal the General Value of Research for Many and Varied Industries

Compacted Glass, Made by a Secret Process, Makes Possible New Accuracy in Lens Manufacture

Have Our Existing Means of Observation Given Us True Samples of Spatial Objects?

Its Solution is Largely Contingent on the Solution of Another Mystery

Fast Work by Civilian Engineers is Getting Allied Warships Back Into Service in Record Time

With Recent Advances in Technique, These Aids to Vision Have Become Much More Satisfactory

smooth, Magnetized Wire Loop for Foreign Bodies in Eye

Modern Forestry Management Takes into Consideration All Phases of Wood Growing and Utilization

Odd Weather Predictors, Some of Which Can be Shown to Have little-Known Scientifc Backgrounds

Made By New Process, Has Many Potential Uses

For Induction Motors, Operates Micro-Watts

Powerful, Compact Airplane Engine Has a Pre-Designed Cooling System and Other Built-In Accessories

Diminish and Increase With Continuing Air Raids