Feature

Electromagnetism Explained by Riemannian Geometry

First Glances at New Books

Camera and X-Rays Used to Locate Ulcers in Stomach

Front Matter

Uncle Sam’s Coast Surveys Speeded up by Airplane

New Projector Will Produce Eclipses of Sun on Demand

Gravity and Electricity Are Merged in New Mathematics

Nature Ramblings: Deep Sea Drama

Soporific Drug Numbs Brain but Goes Chiefly to Muscles

Universe Rushing Outward May Be Optical Illusion

Homes of Ancient Egypt: “A Classic of Science”

Ball Lightning, Old Puzzle to Science, Made out of Smoke