Feature

Hardest Known Cosmic Rays Found in Iron Mountain

New Discoveries Made at Monte Alban

Water Snakes in Zoo Had Amebic Dysentery Epidemic

Wingless Rooster Studied at Smithsonian Institution

Huge Photographic Map of Indian Lands to Be Made

Great California Storm Changed Geography

Nursery Rimes Traced to Ancient Spells

Anti-Plague Commission in Manchuria Made Permanent

Stratosphere under Heavy Attack by Scientists

Yellow Fever Serum Assures at Least Two-Year Protection

Front Matter

Special Spectacles Permit Clearer Submarine Vision