Feature

New Machines and Gadgets

Tribal Rule Requires Marriage to Step-Cousin

Skeleton with Bulgy Brow Found in Pennsylvania

U. S. Troops on Maneuvers to Be “Limeys” in Test

In Science Fields

Idaho for First Time Enters Mercury Mining Picture

Rare Operation Gives Lye Burn Victim Artificial Esophagus

[Photograph]: Flying Ship

Low Boundary of Stratosphere May Shift up and Down

Front Matter

Science Clubs of America

Vitamin C May Improve Treatment of Syphilis