Feature

Dead Butterflies Photograph Themselves without Camera

Sulfur Dioxide Harmless as Food Preservative

Valuable Tung Oil Industry Now Developing in America

Nature Ramblings: “Thousand-Leggers”

Super-Sensitivity of New Research Tool Is Confirmed

Front Matter

Castor Oil Yields Drug That “Unpoisons” Cobra Venom

Medical Students Liable to Get Tuberculosis

First Glances at New Books

Research Pointing Way to Sugared Mortar in Walls

Japanese Beetle Has Foes in Sparrow and Starling

Monte Alban Neighborhood Stirred by Ghost Legends