Feature

Nature Ramblings: The Crow

First Glances at New Books

Male Sex Hormone Prepared in Pure Form for First Time

[Photograph]: Voltmeter

Gastric Ulcer Treated with Extract from Hog’s Stomach

In Science Fields

French Scientists Report Two New Sex Hormones

Probably No Elements Heavier than Uranium

Enzyme Stops Formation of Surgical Adhesions

Steel Jar Will Rescue Men Imprisoned in Submarines

Fighting Radio’s Bugaboos

Lonely Magnetic Poles May Change Ideas of Universe