Feature

First Glances at New Books

Uncle Sam’s Life-Saving Surveyors

Why Indian “Queens” Worked

Stone Age Skulls in Africa

Classics of Science: First Studies of Transpiration

British Birth Rate Falls

Back Matter

Vitamins for Margarine

Mercury Crosses Sun and Meteors Visit Earth

Raises Drunken Rats

Building and Flying Model Airplanes: Model of Lindbergh’s Plane

Nordic Power Is Chemical