Feature

Bumper Crop of Bear Cubs Reported in Yosemite Park

Alpha Particle Tetrahedrons Build up Atom Nucleus

Tonsils, Once Held Useless, May Prevent Diphtheria

Chemist Describes Poison Ivy and Tells What to Do about It

Larger Mercury Vapor Electric Generating Unit Being Built

Used Oil Proves Superior in Auto Operation Tests

X-Rays Are Most Destructive to Young, Growing Cells

Nature Ramblings: Catbird

Size of Newest Planet Is Still Undetermined

Personality from Ink Blots

Telescope with New Features Will Take Best Star Pictures

[Photograph]: Collectors of Atmospheric Electricity