Feature

Blood-Brain Barrier Studied in Infantile Paralysis Fight

Poll of 3121 Persons Shows Wide Variation in Tastes

Distinction Drawn between ‘Flu and Similar Maladies

Primitives Reckon Time; No Group without It

New Museum Exhibits Teach Conservation

1938 Birth Rate up, Death Rate Is Down

Early Crop Improvement Held Mostly Unconscious

Fossil Bones May Belong to Kin of Java Ape Man

America Was News to Sixteenth Century China

Magnetic Forces Aid Swedish Traffic Control

Siberia’s Frozen Ground Is Survival of Ice Age

Limits of Universe Still beyond Astronomers’ Reach