Feature

Oklahoma’s Mound Builders Wore Fancy Stone Earrings

What Hiawatha Was Made Of

Niagara’s Rock Slide Only Minor Incident

In Science Fields

The Impending Desert

Three-Inch Thick Quartz Windows for Bathysphere

U. S. Has 43 Per Cent. of World’s Radio Sets

Front Matter

91 Miles of Tunnels in World’s Longest Aqueduct

Rhino with “Schnozzle” Found in Oregon Fossil Bed

Nature Ramblings: Makers of Land

Bacillary Dysentery Germs May Be Carried in Many Ways