Feature

Seven-Point Plan Offered for Mineral Conservation

[Photograph]: Steam’s Answer to Diesel

Echo-Sounding Device Locates Schools of Fish

Severe Vitamin Lack Causes Nerve Breakdown

South American Quake Almost on Equator

Suspended Animation Possible Even to Human Beings

Radium Never Stimulates; Effects Always Lethal

New Apparatus Makes Tests on the Singing Voice

Lake Turns to Desert When Unwisely Drained

In Science Fields

Summer Drinks Have Long History

Japanese Beetle Pest Spreading in Cities