Feature

Wood Fibers Break into Tiny Fibrils

Guided Missile Research

Oil Field Brines May Yield Magnesium

Electronic “Stopwatch” Times Atomic Particles

Nature Ramblings: Winter Guests

Marriage Rate Increases

Birds Can Be Infested with Barnyard Disease

Books of the Week

Caries Agents in Water

New Mechanical Invention Shoots Grains from Guns

New Machines and Gadgets

Front Matter