Feature

Infrared New Detective Aid to Art Connoisseurs

Dog Distemper May Give Weapon against Influenza

Science Neglected Because Scientists Glorify Analysis

Blackfoot Indian Makes Sign Language Dictionary

More Radium in Ocean Mud than in Rocks of Dry Land

Bahamas May Have Been Part of American Continent

Hybrid Trolley Car-Bus Uses Either Current or Gasoline

Science Links Living Indians and Mystery Ruins

First Glances at New Books

Front Matter

Sex Control Succeeds with Warm-Blooded Animals

[Photograph]: Spider of Steel