Feature

Valuable Tung Oil Industry Now Developing in America

Corroded Coins May Set Date of Persian Palace

Super-Sensitivity of New Research Tool Is Confirmed

Front Matter

Castor Oil Yields Drug That “Unpoisons” Cobra Venom

Medical Students Liable to Get Tuberculosis

New Method May Result in Cheap Supply of Ramie

Chemical Nature of Vitamin C Explained

Thyroid Gland Activated by Pituitary Gland

Goldfish Experiments May Explain Cause of Obesity

Dead Butterflies Photograph Themselves without Camera

Ancient Earth of Mexico Reveals New Treasure Tomb