Feature

Measles Epidemic Broke Record

Sound Echoes Tell Height of Airplane above Ground

Twin Chimpanzees Born for First Time in History

Heat Treated Wastes Become “Cream” of Oil

In Science Fields

Riches from the Sea

Reports Improved Tests for Diagnosing Tuberculosis

MacDonald Observatory Disc Not Damaged

Stellar System of Stars Likened to Swarm of Bees

Astronomer and Chemist Receive Franklin Medals

Nature Ramblings: Writ in Clay

United States Need Not Fear Famine Even with Drought