Feature

Front Matter

Tendency to One Sex May Be Hereditary in Families

Machine Outdoes Physician in Detecting Artery Hardening

First Glances at New Books

Huge Burning Glass May Give Maximum Sun Heat on Earth

Discovery of Element 87 Reported by Cornell Chemists

Pine Tar Oil Spray Kills Insects and Checks Fungi

“Universe Maker” Begins Tour of American Cities

Man’s Relative Hairlessness Not Due to Wearing Clothes

The Edison Effect: “A Classic of Science”

Shield-like Paintings of Prehistoric Indian Discovered

Nature Ramblings: Beaver’s Little Cousin