Feature

Irish Immigrants Becoming Emigrants

Electromagnetism Explained by Riemannian Geometry

Homes of Ancient Egypt: “A Classic of Science”

Front Matter

Uncle Sam’s Coast Surveys Speeded up by Airplane

In Science Fields

Trees Will Die Unless Heavy Rains Fall

Same Parasite Infests Four Animal Groups

Gravity and Electricity Are Merged in New Mathematics

First Glances at New Books

Camera and X-Rays Used to Locate Ulcers in Stomach

New Projector Will Produce Eclipses of Sun on Demand