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A Hail of Lead Fire Over England

Coal Tar Began it

Vast Increase in U. S. Organic Chemicals Industry

By Charles M. Hackett

Breath of Industry

Oxygen Torches Cut, Condition, and Pre pare Steel; Drill Stone and Concrete

By Harold Lawrence

Hot-Spray, Spring Isolator, and more

Lacquer Finishes Applied Faster And at Less Cost

First Aid For Burns

Application of Tannic Acid is Procedure That Has Received World-Wide Recognition

By Charles A. McAvoy

Stimulating, Fair Exchange, and more

Modern Version of the Medical Coil

Interstellar Gas

More and More, Astronomers are Finding Matter as Particles Between the Stars

By Henry Norris Russell

Build No Freaks

Warships Can Be Better Designed To Meet Needs of Their Own Classes

By Brockholst Livingston

U. S. Tanks, North Carolina

New Armored Corps Modelled After Those of Germany

Mud, Concrete, ond Oil

Drilling Mud, Treated Like a Favorite Child, Makes Possible Wells Miles Deep

By Andrew R. Boone

Under Mohile River

Vehicular Tunnel Built On Land, Floated Into Place, Shows Engineering Advances

By R. G. Skerrett

Road Protection

Bags of Green Concrete Laid as Rip-rap

Airships, Engine, and more

Still Hold Possibilities for Military Purposes


Rotating-Wing Aircraft Exhibit Desirable Characteristics for National Defense

By Alexander Klemin

No Short-Cut Horticulture

Plant Growth Chemicals Require Painstaking Care. Promise Significant Results

By Philip H. Smith

Efficient Turbines, Star Jackets, and more

Cheaper Electricity Should Come From New Installation

Physics In Court

Computations by Which Police Can Work Out Driving Speeds from Skid Marks after Accidents

By C. W. Sheppard

Edison, Inventors Aid, and more

One of His Co-Workers Supplies An Anecdote


  • 50 Years Ago, September 1940

  • From the Editor

    Our Point of View, September 1940

  • Browsing With the Editor, September 1940

  • Recommended

    Our Book Corner, September 1940

  • Departments

    Personalities in Science, September 1940

  • Industrial Trends, September 1940

  • Camera Angles, September 1940

  • Your Firearms And Fishing-Tackle., September 1940

  • Telescoptics, September 1940

  • Legal High-Lights, September 1940

  • Current Bulletin Briefs, September 1940

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