Feature

Archancestral Crocodile Modeled for Museum

Navajos to Build Their Own Capital

Love of Pets Chief Obstacle in Conquest of Parrot Fever

Explorations at Ur Finished; Cemetery Found in Pit Bottom

Mass Three Discoveries Close Gap in Elements

Physics Turns Time Backwards; Mind Again Eludes Analysis

[Photograph]: Boulder Dam at Night

Front Matter

Back Matter

First Glances at New Books

Layers Found in Asphalt May Describe Prehistoric Weather

[Photograph]: Corona of Eclipsed Sun