Feature

Find Another Way to Make Radioactive Nitrogen

First Glances at New Books

Front Matter

Corn Conqueror in First Round of Chinch-Bug Fight

[Photograph]: Baby Locomotive

Radio Currents Add to Knowledge of the Brain

More Ionized Layers Are Suggested by Scientist

Color Changes in Fish Determined by Half an Eye

Smoothness of Surface Now Indicated by Sound

Artificial Lightning More Powerful than Nature’s

Ship’s Propeller Should Be in Bow as Is Seal’s

200 Elms Killed Daily by Dutch Elm Disease in East