Feature

March Will Be Wet in Most of Nation

Fresh Water from Ocean

57 Varieties of U. S. License Tags Are Problem

Reversed Washer Used in Air-Cooling System

[Photograph]: Giant Radio Telescope

Predict Fading for TV

New Machines and Gadgets

Front Matter

Radioactive Hydrogen Tag

Homing Instinct of Frogs

Quick Warm-up Needed to Reduce Engine Wear

ACTH Decreases Blood Flow through Brain