Feature

Hayfever Caused by Molds from Dust and Ringworm

Genes Declared Impotent as Major Evolutionary Factors

Shipworms Proving Destructive to Rope

Cosmic Ray Energy Difficult to Measure

Idealism Reigning, Says Jeans in New Book

One-Celled Animals Shine under Ultraviolet Light

First Glances at New Books

Front Matter

New Ascent Will Try to Pass Heights Reached by Piccard

First Chemical Evidence of Artificial Transmutation

Scientists Penetrate Unknown Surrounding Newborn Babies

Petroleum Said to Come from Garbage of Sea