Feature

War Changes the Problems of Wildlife Management

Science Observer

Underground Quarries Shelter British Aircraft Factories

Excessive Acid in Nerves May Cause Altitude Ills

Business Executives Warned against High-Speed Work

Improved Design of Planes from Museum Work

Treatment of Carriers May Prevent Dysentery

New Machines and Gadgets

Nature Ramblings: Internal Thorns

Oldest Story in the World Unearthed for Study

First Glances at New Books

Front Matter