Feature

Now Tape Recorder Will “Count Your Sheep”

Warn of Germ Warfare

Books of the Week

Glow Plug Heating Makes Diesel Engine Starting Easy

Now No Kindling Required to Light Fire in Furnace

World’s Tiniest Plant in Its Class Is Leafless Parasite

Coating for Ceramals May Give Better Turbine Blades

Cortisone Hits Toxemia

Airborne Disease Persists

Faint Double Star Is Triple

Front Matter

Earth Gets More Magnetic during Last Two Decades