Feature

Unknown Pueblo Periods Turned into Dated Eras

Many Colors Found in Eyes of Newborn Babies

Control of Sex in Rabbits Attempted by Electricity

Passing Sound through Gases Helps Study of Molecules

[Photograph]: Loud

Front Matter

Faster Flying, Slower Landing Airplanes Being Achieved

Brains of Great Men

City Population Decreases in Depression’s Third Year

New Disease Caused by Yeast-like Organism

Alcoholized Gasoline Approved in Tests

One-Celled Animals Grown on Wholly Inorganic Diet