Ancient Art Revealed by a Peasant's Plow

Artificial 'Radium'

Making Other Elements Artificially Radio Active, What Happens - Central Importance In Physics Today, Treatment of Cancer

Civil Aviation in National Defense

The "Space-Penetrating Power" of Telescopes

Compare Two Telescopes With Same Aperture hut Different Focal Lengths, Limitations of a Great Telescope, Seldom at its Best

The Food of Peking Man

Man's First Dietetic Record Found in His Actual Living Quarters, Oldest Known Inhabitant of Asia, Fossil Garbage, A Rare Specimen

Surer Artificial Respiration

Nielsen Life-Saving Technique Surpasses, by 41 Percent, the Widely Used Schaeffer System

Diesels for Battleships?

Large Number of Small Engines, Greater Fuel Economy, Quick Replacement, Repair, Simple Overhaul, Spares for Replacement

The "Big Top" in a Theater

Rubber Takes the Shocks of Industry

Persistent Rubber Research, Product Sticks to Old Jobs, Does Them Better, New Uses, New Research, Potentialities for the Future

A Bigger and Better Cape Cod Canal

"Seeing" the Invisible