Feature

Nocturnal Animals Subject of Study by Scientists

Venus, Queen of May Evening Skies

Jewels Suggest Aztec King Lay in Monte Alban Tomb

Racial Factor Involved in Rate of Metabolism

American Rediscovers Lost Chemical Compound

Steel-like Glass Permits Centrifuge Observations

Front Matter

Interesting Delporte Object Keeps Astronomers Guessing

New Aid for Deaf Transmits Sound through Bones or Teeth

German Scientist Confirms Existence of Neutrons

In Science Fields

Restriction Urged on Use of Poisonous Thallium