Feature

Synthetic Sapphire Now in Production in U. S.

Army Insecticide

Hot-Water Mining Method for Potash Salt Invented

Infra-Red Rays Penetrate Smoke in the Atmosphere

Most Used Telescope

Plague Germ Survives 20 Years in Test Tube

Post-War Job-Planning

Eye Flash Exposures

U. S. Navy’s Flying Boats Superior to Jap Plane

Super Bomber Coming

Hell’s Mouth in Mexico

[Photograph]: U. S. Army Field Jacket