Feature

The Origin of Cannibalism

Young Criminals Not All Defective

Classics of Science: Darwin on Orchids

“Knockless” Gasoline

Ultraviolet in Country

Frogs Learn Geometry

Position of Traffic Lights Important

First Glances at New Books

Youngest Babies Help Solve Old Problem

Back Matter

Nature Ramblings: Crossbill

The Value of “Cranks”