Feature

Fish That Bite Men

Airplane Propeller Makes World’s Noisiest Roar

Stratosphere Balloonists to Seek Sun’s Neutrons

New Stratosphere Flight to Be Made in October

High Temperatures Calculated for Radio Roof of World

Thin Aluminum Foil Highly Efficient as Heat Insulator

Chemist Sees Eventual Profit in Gold from Sea Water

Government Chemist Less Optimistic on Ocean Gold

Nature Ramblings: More Water than Dust

First Glances at New Books

Front Matter

Capsule before Breakfast Gives Immunity to Colds