Feature

Front Matter

The Great Ice Age: “A Classic of Science”

Disappearance of Diphtheria in Few Years Predicted

Faraday’s Research on Metals Anticipated Modern Steel

Nature Ramblings: An American Leopard

Metal, Though Good Conductor Now Insulates against Heat

Air Gun Used to Dust Delicate Artifacts

New Oil for Paints Promised by Safflower

Fish Use Their Ears to Maintain Balance

Tropical Hurricanes Once Ancient Maya Disasters

[Photograph]: In an Armor of Spines

Eugenie Hats Demand Feathers; Ostrich Breeding Is Revived