Feature

Leprosy Germ Cultivated

Alaska Defense Discussed

Brucellosis Is Widespread

Work of Gibbs, Long Acclaimed in Europe

Near-Vacuum Chamber Tests Supersonic Propellers

Tree Production Speed-up by Wires, Cutting Roots

Search for Scientists

Extreme Cold Key to What Makes Steel Really Hard

Replacement of Teeth

Ozone as Preservative

Typewriter Makes Sheet Music Symbols

Most Delicate Flint Work