Feature

Persistent Hoarseness Is Early Sign of Cancer

First Glances at New Books

Front Matter

Stars and Comets Affected by Cosmic Radiation

Smallpox Is Unnecessary but Still on the Increase

Dyeing Studies Give Size Index of Cotton “Pores”

Stone Age Secrets Wrested from Old Weapon

Coast of Australia Shaken by Earthquake

Helium Suggested as New Preventive of “The Bends”

Action and Immune Serum Prevent Measles Epidemic

Crime Laboratory Science Clears up Mysteries

Lighting Systems Can Be Tested before Installation