Scientific American Magazine Vol 153 Issue 3

Scientific American Magazine

Volume 153, Issue 3

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Features

Save Our Game!

Provide Reservations, Stop Useless Swamp Drainage, Game Conservation Has Wide-Spread Effects, Value to Communities and Individuals

J. N. Darling

Photo-Murals Gain Favor

Why Seek Air Records?

Record Flights Point the Way to Scheduled Operation, Prove Correctness of Designs, Test Equipment, Provide an Index of Performance

Reginald M. Cleveland

In Defense of Insects

Only 300 Species Out of 500,000 Are Man's Enemies, No Insects--No Silk Stockings, No Fruit, Even the Hated Housefly Now Useful

Albert Dickman

Tempered Glass

Resists Temperature Changes, Can Be Twisted or Bent, Stronger Than Ordinary Glass, Clear or Colored

Tumbling Caissons

Caissons Constructed Upside Down on Ways, Launched, Built Up, Turned Over, Sunk in Clay, Workmen Inside Excavate Water Bed

R. G. Skerrett

The Cosmic Ray Puzzle

Once Believed to Be Light of Extremely High Frequency, Cosmic Rays Are Now Thought to be Mainly, or Largely, Charged Particles, But the Final Answer Still Remains a Mystery

Jean Harrington

Cosmic Rays

Arthur H. Compton

For Better Houses

Scientific Materials, For Insulation, Durability, Permanence, Easier Application, Slow Growth Explained, What The Future Holds

Philip H. Smith

Cut the Overhead!

When Hard Times Come It Is the Logical Time to Increase, Not Cut, the Funds for Research, Research Millions Are the Seeds of Billions

T. Swann Harding

The Last Word in Ameriean Naval Construction

Lost Wax Casting

Used by Cellini and Before, Finest Work Possible, How It Is Done

Progress in This Age of Science as Told to Scientific American, September 1935

William S. Shipley

Departments

Across the Editor's Desk, September 1935

Personalities in Science, September 1935

Hydraulics And Electricity Make Better Automobile Bodies

Our Point of View, September 1935

An Ancient Egyptian Sundial, Laboratory Tests for Rugs and more

Current Bulletin Briefs, September 1935

Camera Angles

World-Wide Radio, September 1935

Books Selected by the Editors, September 1935