Feature

Sex Hormone Unique to Man Discovered by Chemist

Front Matter

Army Seeks New Yardstick to Measure Flyers

British Astronomer Presents New Theory of Solar System

New Cause and Relief for Arthritic Pain Discovered

Science Observer

Cancer and Fluorescence of Tear Glands Linked

Report Typhus Vaccine Trial Going Forward on Large Scale

[Photograph]: Tree-Size Tobacco

Anti-Aircraft Gun Mount First Built by Industry

New Mineral Discovered with Smallest Crystals

[Photograph]: Petrified Worm Holes