Feature

Waterway Plan Proved in Miniature

Decline of Pueblos Mysterious

Nature Ramblings: Cardinal

First Glances at New Books

Front Matter

Parrot Fever Not Transmitted by Birds Confined to Zoos

Carbon Monoxide May Now Be Removed from Auto Exhaust

Ancient Ivory Tools Testify to Existence of Alaskan Culture

Astronomers See Quartz Mirrors Made

In Various Science Fields

Exploring a Particle Now Possible

Finds House 5,000 Years Old at Ur