Feature

Nature Ramblings: American Eagles

New Moving Pictures in Colors Use Tiny Colored Squares

Chemist Describes Poison Ivy and Tells What to Do about It

Larger Mercury Vapor Electric Generating Unit Being Built

Nature Ramblings: Catbird

First Glances at New Books

[Photograph]: Collectors of Atmospheric Electricity

Front Matter

Bumper Crop of Bear Cubs Reported in Yosemite Park

Personality from Ink Blots

Automatic Seismograph Works Only When Quake Starts It

Alpha Particle Tetrahedrons Build up Atom Nucleus