Feature

Chemical Released by Nerve Carries Message to Muscle

[Photograph]: A Year’s Supply of Frogs

Soviet Scientists Make Large Telescope Lens

The Chemist Now Aids in Solving Crime Mysteries

Thorium and Uranium Now Find Use in Industry

Study of Anesthetics Key to Mystery of Life and Death

“Heroes of the Arctic” Thrilling Drama of North

See the Meteors in Comfort: In German Planetarium

Front Matter

Kojic Acid Provides Clue to Cause of Convulsions

Enormous Canyon Discovered in Unexplored Mexico

[Photograph]: Parade of Heads and Horns