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Features

Mechanical Shock-Troops of the Blitzkrieg

Bombers Plus Battleships

Both Are Needed For Coordinated Effort

By A. B. Vosseller

Aircraft Versus Warships

Helldivers

Describing the Technique of Dive Bombing, Conceived for United States Naval Use

By James L. H. Peck

Smokeless, Flashless

New U. S. Powders Don't Betray Gun Positions

Propeller Cuffs

Sikorsky's Helicopter

Aviation Editor, Scientific American. In charge, Daniel Guggenheim School of Aeronautics, New York University

By Alexander Klemin

Geriatrics

The Newest Medical Specialty Deals with the Aging, Now that the Elderly Increase

By Barclay Moon Newman

Steadily Better, Roto

Three Decades of Science and Child Mortality

How Big Does the Mood Look?

In Which it Turns Out that Astronomy Has Something to Learn from Psychology

By Henry Norris Russell

When You Steer a Motor-Car

Mechanism Has been Designed to Indicate Steering Deviations When Car is Rolling

By A. P. Peck

Carbon Dioxide on Wheels

Industrial Plants and Military Airports Are Using Mobile Units Carrying Fire Killing Gas

Nylon, Turbine Shafts, and more

The Evanescent Mesotron

With Knowledge Incomplete, Science Strives to Account for some Puzzling Phenomena

By C. W. Sheppard

Spectro Photometer, Hygrometer, and more

Roots are Pumps

Research Shows Capillary Attraction Has Little To Do With Sap Circulation

By Philip H. Smith

Business and Changing Climates

Are Slow Climatic Changes the Basic, Underlying Cause of Economic Cycles?

By Clarence A. Mills

Turkey Steaks, Niagara Bridge, and more

Departments

  • 50 Years Ago, October 1940

  • From the Editor

    Our Point of View, October 1940

  • Browsing with the Editor, October 1940

  • Recommended

    Our Book Corner, October 1940

  • Departments

    Industrial Trends, October 1940

  • Your Firearms and Fishing Tackle, October 1940

  • Camera Angles, October 1940

  • Telescoptics, October 1940

  • Legal High-Lights, October 1940

  • Current Bulletin Briefs, October 1940

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October 1940