Feature

Smokers Less Long-Lived; Heavy Drinkers Die Earlier

[Photograph]: Synthetic Dust Storms

Tests before All Flights Recommended for Pilots

New Planes Will Be Double the Size of Today’s Largest

[Photograph]: Three Lamps

Extinct Cinder Cone Makes Striking Aerial Photograph

Too Hard or Too Soft: Life Sinks to Savagery

Ultra-Short-Wave Beacons May Guide Future Aircraft

New Methods Vastly Increase Usefulness of Libraries

Large Gland in Chest Seen Responsible for Virility

Photographic Film Aids Radium Tests

Playing with Shy Children, Doctors Learn Their Troubles