Feature

Disappearance of Diphtheria in Few Years Predicted

Faraday’s Research on Metals Anticipated Modern Steel

Airplanes Enable Geologists to Survey Arctic Copper

Smallpox Threatens Large Part of Country

In Science Fields

[Photograph]: In an Armor of Spines

Harvest Moon Now Flooding Earth with Excess Light

Nature Ramblings: An American Leopard

The Great Ice Age: “A Classic of Science”

Air Gun Used to Dust Delicate Artifacts

Flash Welding Joins Metal Amid Shower of Sparks

New Oil for Paints Promised by Safflower