Feature

Trumpeter Swans Again Nesting in Yellowstone

“Healthy Savage” Myth Hit by Research on African Natives

Front Matter

Pictures of Spinning Model Demonstrate Atom Structure

7,000,000 Acres of Locusts Hatching in East Africa

Seven Times Rebuilt Pyramid Explored at Tenayuca, Mexico

1932 Total Eclipse Will Be Attraction for Vacationists

Jordan River, Ideal for Power, Is Made to Yield Electricity

No Ice in North Atlantic; Ice Charts Not Published

New Type of Prehistoric Indians Found in Texas

Paradoxes of the Skies

New Process Cheapens Ultraviolet Glass