Feature

Leprosy Is Being Attacked by Chemical Warfare

Few Mines Protected from Explosions by Rock Dusting

Glandular Extract Fails to Cure Cancer in Mice

Notebook of Science

New Orleans Earthquake Located by Old Method

Guayule Produces Rubber Only When Its Life Is Hard

Nature Ramblings: Dormant Butterflies

Waste Natural Gas Used to Increase Oil Well Yield

First Glances at New Books

Front Matter

Ultraviolet Reveals Details Shorter than Visible Light

Ice Age Whale Fossils Found in Michigan