Feature

Ravens Know Trick of Military Aviators

Front Matter

The Authors Say

Insect Hordes Survive Winter; Ready for Attack on Crops

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

Back Matter

[Photograph]: Corona of Eclipsed Sun

Radio “Echoes” from Moon to Be Sought by Thousands

New Books