Feature

Inch-Long Radio Waves Interest Marconi

Prehistoric Ruins to Be Restored by Works Program

Star Temperatures Now Found from Spectra Photos

Radium Poisoning Treatment Promising

Front Matter

In Science Fields

Trees Protected by Lightning Rods

Terrific Packing Job Pictured in Making of Spiral Nebulae

Arctic on Short Rations of Ultraviolet Radiations

Language Record Made before “Last of Mohicans” Passed

[Photograph]: Dr. P. W. Bridgman

First Glances at New Books