Feature

Diamond-Hard Materials Seen as Future Development

Smaller Loaves and Cakes from Rust-Diseased Wheat

First Glances at New Books

Front Matter

Birth Control Effects Negative, Dr. Osborn Tells Eugenists

Stroboscopic Camera Takes One Picture per Flash

Coeducational Alumni More Nearly Replace Themselves

New Theory Explains Radioactive Disintegration

Anti-Oxidizing Substance Found for Anti-Knock Gas

Silica Black Is New Product of Many Possible Uses

Negroes Grow Lighter, but Color Will Never Be Uniform

Ice Age Rhinoceros Displayed in Museum