Feature

New Deadly Disease Is Destroying Elms in Ohio

Leading Scientists Are Born and Trained in East

Reversible Pitch Propeller to Be Tried as Brake

First Glances at New Books

Front Matter

Thrombin Treatment Promises to Save Lives of “Bleeders”

[Photograph]: New Wildlife Stamps

Time Important Factor in X-Ray Treatments

Plywood Airplane Parts Built by Revolutionary New Method

Industrial Mobilization Planned for U. S.

Healthy Mental Growth Depends upon the Parents

Mental Breakdowns Occur on the African Veld, Too