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Features

Photography In The "Ads"

Behind the Scenes . . . Artists of the Camera . . . Temperamental Food Models . . . Photographic Murals . . . Photomontage . . . Color Photography

By Jacob Deschin

A High-Speed Sailboat

No Foresail Or Boom . . . Only One Mast Stay . . . Double Sail . . . Mast Rotates

There's Life In The Old Iron Horse!

By William C. Dickerman

The Earth's Wabbling Axis

How the Changing Snow Load, and the Winds and the Ocean Currents, Constantly Shift the Poles

By Henry Norris Russell

Exploring Prehistoric Georgia, April 1935

Massive Mounds Stimulating the Imagination . . . Moundbuilders Were Simply Ordinary Indians . . . Prehistoric Cornfields . . . Ceremonial Houses

By A. R. Kelly

The Sanity of Insanity or The Insanity of Sanity

Understand Insanity . . . The Pleasure Principle . . . "Poor Devil, He's Sane" . . . No Desire to be Cured . . . Having a Perfectly Wonderful Time

By G. H. Estabrooks

Pinhole Photography

Pinhole Cameras Not Toys . . . Produce Excellent "Atmospheric" Effect . . . Easy To Make

By Frederick W. Brehm

Paints In Transition

Rise of the Synthetics . . . New Research, New Developments . . . Rubber Paints . . . Types for Industry, for Homes . . . An All-Purpose Finish?

By Philip H. Smith

Fly High For Comfort

Approaching the Stratosphere . . . For Economy and Regularity of Operation . . . More Speed With Less Power . . . Avoiding the Bumps

By Reginald M. Cleveland

On A Natural Damsite

At Grand Coulee . . . Original Dam Was Pushed Up By Nature . . . Man-Made Dam Will Be In Two Units, For The Development Of Hydro-Electric Power

By Grace Kirkpatrick

Cork in Fire Bricks

Diatomaceous Earth and Clay Bricks, Molded With Water, Made More Porous By the Use of Cork

By T. E. Wood

Progress In This Age Of Science

By Gerard Swope

Departments

  • Departments

    Across The Editor's Desk, April 1935

  • Books Selected By The Editors, April 1935

  • Personalities In Science, April 1935

  • Photography On Two Selected Wavelengths

  • Our Point of View, April 1935

  • Probing Into Brain Processes, Attachment Cuts Blow-Out Danger And more

  • Current Bulletin Briefs, April 1935

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April 1935