Feature

Transmutation of Elements Changes Chlorine into Argon

Treat Ulcers by Continuous Drip of Milk into Stomach

Newly Discovered Plant Fossil Doubles Life of Land Plants

In Science Fields

Counting Riches in Wives

Accurate Cheap Lenses Made from Transparent Plastic

Apathy toward Pure Science Deplored by Dr. K. T. Compton

Nature Ramblings: The Coming of Clover

Eiffel Tower Is Lighted to Honor Paris Exposition

First Glances at New Books

Front Matter

Miniature Airplanes Now Fly Freely in New Test Tunnel