Feature

Tree-Ring Evidence Sure as Fingerprints

Soviets Start Chain of Arctic Reindeer Ranches

Soil Erosion Shown as Manifold Menace

Soviets Plan Establishment to Capture Power from Sun

Ultraviolet Rays Fatal to Eggs of Parasites

Warns of Danger in New Reducing Drug

Nature Ramblings: Never Sees Shadow

Weather Summary Shows How Bad Drought Year Was

First Glances at New Books

Back Matter

[Photograph]: Frontiers of the Shadow

Study of Nova Hastened before It Fades Again