Feature

Airplanes Enable Geologists to Survey Arctic Copper

Air Gun Used to Dust Delicate Artifacts

New Oil for Paints Promised by Safflower

Nature Ramblings: An American Leopard

Disappearance of Diphtheria in Few Years Predicted

Nature Ramblings: Snow-on-the-Mountain

Explosive Used to Produce Earth Tremors Artificially

First Glances at New Books

Front Matter

Evidence Obtained That Space between Stars Not Transparent

New Photo Tube Measures Temperature in Furnace

[Photograph]: Bareback