Feature

First Glances at New Books

Front Matter

Huge Burning Glass May Give Maximum Sun Heat on Earth

Prehistoric Cave Culture Proves Mystery to Scientists

Sulphur to Be Taken from Crater of Mexican Volcano

Eat Rather than Brush to Develop Sound Teeth

[Photograph]: Three Generations of Bridges

Grotesque Figure Dug up at Olynthus Shakes Art Theory

Tendency to One Sex May Be Hereditary in Families

Predicting Undiscovered Elements: Part One: “A Classic of Science”

Machine Outdoes Physician in Detecting Artery Hardening

In Science Fields