Feature

Front Matter

Find “Extinct” Fish Alive in South African Waters

Earthquake History of U. S. Compiled by Coast Survey

WPA Built 154 Airports, Improved 494 Others

Confirm Release of Neutrons from Splitting Uranium Atoms

Fire Aloft May Be Conquered by Safe Fuel and New Engines

Refugees and Air Raid Plans Bring Europe Health Problems

Sterilizing Lamp Tenderizes Tough Hamburger Beef

New Air Corps Bombers Rated at near 400 M.P.H.

Mechanical Model Shows How Electric Waves “Look”

Hitler Must Deal with New Racial Problems

Wing of Stratoliner Same as Flying Fortress