Feature

Thyroid Gland Activated by Pituitary Gland

First Glances at New Books

Front Matter

Super-Sensitivity of New Research Tool Is Confirmed

Camera Reveals Mountain Not Seen by Aviator

Opiates Found Related to Essential Elements of Diet

New Method May Result in Cheap Supply of Ramie

Castor Oil Yields Drug That “Unpoisons” Cobra Venom

Sulfur Dioxide Harmless as Food Preservative

Medical Students Liable to Get Tuberculosis

Dead Butterflies Photograph Themselves without Camera

Old Telescope Mirrors Satisfy Modern Standards