Feature

Lignin a Source of Valuable Chemical Raw Materials

First Glances at New Books

New Whooping Cough Vaccine Promises Better Protection

Front Matter

Four Types of Auto Drivers Are Hazards on the Roads

Multi-Engined “Airacuda” Invades Pursuit Ship Field

You’ve Never Known Such Animals

Rat Experiments Give Clue to Creative Thinking in Man

Research Finds Secret of Tone in Old Violins

Democracy Declared Best Means toward Human Goal

Radio Signals Interfere with Earthquake Records

15,000-Year-Old Stone Tools Reveal Dawn Men of America