Feature

Pole Star Is “Temporary”

Fewer Males Predicted

Pregnancy Illness Relief

Playgrounds with Rubber Surfaces Are under Trial

Arc Welder’s Light Can Produce a Sore on Mouth

Virginia Hospital Has New Oxygen-Making Plant

In Science Fields

Lightweight Tractor Built for Small Farms

New Polio-like Disease

Front Matter

Books of the Week

England Wants to Improve Detergents from Petroleum