Feature

Stone Tool in Nebraska Cliff May Reveal Ice Age Americans

“Word Swallowing” Links Indians of Two Americas

Beryllium Atoms Radioactive; New Helium Variety Predicted

Earth’s Many Depressions Were Blessings in Disguise

Ridding Beard of Roughness Saved Wisconsin Barley Crop

Positron Formally Introduced; Negative Proton Predicted

Fallowing of Leased Land Will Pay Farmers Twice

Fossil Redwood Identical with Living Species

Front Matter

Russian Physicist Explains Genesis of Gamma Rays

Trees Still Petrifying in Yellowstone Park

Fingerprints May Be Used to Protect Checks from Forgery