Feature

Invisible Fences

Bauxite, Vital Strategic Ore Accessible to All Powers

Antiquated Science of 1875 Slows Progress in Defense

U. S. Finds New Source of Fish Oil Vitamins in Peru

“Stainless” Silverware by Plating with Alloy

Nature Ramblings: Children of New Skies

New Machines and Gadgets

Science Clubs of America

First Glances at New Books

Front Matter

Conquest of Liver Cirrhosis by Diet Now Seems Likely

[Photograph]: Assembly Plant