Feature

Wastes from TNT Plants Hard to Get out of Water

Mass Production of Wood Planes Means Good Glues

Food Research Reported

Silver Bus Bars

Egg and Avidin Fails

Nature Ramblings: Mixed Symbols

Gas Attacks Expected

First Glances at New Books

Expansion of Air Forces Is Exhausting Instructors

Front Matter

Mental Peace Needed

Garden of Poles Planted to Test Preservatives