Feature

America’s Ancient History Revealed by CWA Projects

Meteor Showers to Be Observed from Airplanes

Organism Causing “Black Beets” Is Found

Train of the Future Given Test Runs

Ancient Seaweed Reef in California Mountains

[Photograph]: Pioneer of 1934

Blood Tests Relate American Indians to Siberian Tribes

Gun Firing into Gun Devised for Super-Pressure and Heat

Better Microphones and Loud Speakers Sought

Measles Cycle Now at Peak; Many Cases Are Reported

Experiments with Big Guns Give New Sound Speed Value

Earthquake Problems Automatically Solved