Feature

Winners of Scholarships

Full-Size Mines Tested in Laboratory

College Students Deferred

Wind Tunnels Now Used to Test Signboards

X-Rays at the Front

Viruses Can Help Man as Well as Harm

[Photograph]: Trained Porpoise

Snakes Battle Cancer

Plenty of Crude Oil

Range Pest Beaten by Imported Beetles

New Potato Resistant to Two Diseases

Blades Made by Extruding