Feature

Forest Fire Fighters Drill Their Own Wells

Front Matter

Gravity and Electricity Are Merged in New Mathematics

Electromagnetism Explained by Riemannian Geometry

[Photograph]: Memorial to Columbus

Third Competitor Enters Race for Missing Element 87

Faint Nebulae May Be Most Distant Objects

Camera and X-Rays Used to Locate Ulcers in Stomach

Uncle Sam’s Coast Surveys Speeded up by Airplane

Irish Immigrants Becoming Emigrants

New Projector Will Produce Eclipses of Sun on Demand

Magnificent Orion