Feature

Mathematicians Abandon Aristotle’s Logic

Superior Rhythm of Negro Children Checked by Test

Ultraviolet Rays Detect Value of Farmers’ Seed

Nature Ramblings: Not a Good Neighbor

First Glances at New Books

Nature Ramblings: Grapefruit

Electric Eye May Show That Ours Is Just Ordinary Galaxy

Radium Poisoning Treatment Promising

First Glances at New Books

Front Matter

Weather Bureau’s “New Deal” to Change Forecasting Basis

Ancient Statuary Revived in Colored Terra Cotta