Feature

Sea Level Higher on Pacific than on Atlantic Coasts

Seasons Affect Birth Rate and Infant Health

Galaxy of Foreign Scientists Invade Century of Progress

In Science Fields

Alcoholized Gasoline Inferior, Says Petroleum Chemist

Stratosphere Shell Prepared for Navigators

The Age of Man: “A Classic of Science”

American Pyramids Served as Timepieces, Survey Shows

Tut-Ankh-Amen’s Mother-in-Law

Front Matter

Hot Weather Favors Belated Spring Planting

Nature Ramblings: Not All Jawbreakers