Feature

New Machines and Gadgets

Science Clubs of America

Nature Ramblings: Food for Giants

Power of Matter to Attract Other Matter Is Remeasured

First Glances at New Books

Front Matter

Colleges Train 172,000 Youths; Ready by Beginning of 1943

Simple Treatment Works for Foot Wound from Nail

Three Rocket Weapons in Use by Both Germans and Russians

Hybrid Alfalfa Is Good for Livestock and Soil

“X-Ray Microscope” Invented by Nobelist W. L. Bragg

Beef Blood May Save Lives of Wounded Fighting Men