Feature

Color-Blindness Test

In Science Fields

Low Intelligence May Be Screened out of New Army

Number of White Blood Cells May Predict Length of Life

Gland Extract Added Inches to Height of Dwarfed Boy

Nature Ramblings: Long-Lived Seeds

Test Hopeful Chemical Treatment of Tuberculosis

Substitutes in Automobiles Superior in Many Instances

Prevention of Diabetes Possible, Dr. Best Suggests

U. S. Can Expect as Many Indians by 1980 as in 1492

Cork Trees, Rubber Bushes Being Grown in California

New Glare-Eliminating Screen 99.99 per Cent Efficient