Feature

Stars in American Flag Came from Bottom of Sea

In Science Fields

Germs Reported to Inherit Ability to Undergo Change

Motion Pictures Used to Measure Growth of Germs

Freezing Food Does Not Kill Botulinus Germ

Jungle Ruins Yield Mayan Masterpiece

Front Matter

Typhus Fever in Man Proved to Be Transmitted by Fleas

Cold Storage Does Not Harm Vitamin C of Apples

Tree Ring Studies Steadily Decrease Undated History

Science Makes Notable Strides during 1931

In Science Fields