Feature

Grasshopper and Locust Plague Declared Largely Man-Made

Long Preparation Planned for Future Specialists

New Ship Fumigant Safer than Hydrocyanic Acid

Blue Dye May Relieve Stubborn Skin Disorder

Erratum: First Glances at New Books

Bone Age Gives Index to Mental and Emotional State

Erratum: In Science Fields: Speed of A.C. Motors Varied with Vacuum Tube

Lightning

[Photograph]: The Pribilofs Come to New York

American Pyramids Served as Timepieces, Survey Shows

Seasons Affect Birth Rate and Infant Health

Galaxy of Foreign Scientists Invade Century of Progress