Feature

Superiority Predicted for Rotating Wing Aircraft

Front Matter

Huge Photographic Map of Indian Lands to Be Made

Stellar Looking-Glass Slowly Cooling

Special Spectacles Permit Clearer Submarine Vision

Chance Discovery May Yield Metal-Plating Method

In Science Fields

Wingless Rooster Studied at Smithsonian Institution

Sunspot Storms May Lighten Air

Nursery Rimes Traced to Ancient Spells

Anti-Plague Commission in Manchuria Made Permanent

Water Snakes in Zoo Had Amebic Dysentery Epidemic