Feature

Rotating-Dome Observatory Built Entirely by Students

Eiffel Tower Is Lighted to Honor Paris Exposition

Counting Riches in Wives

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

Treat Ulcers by Continuous Drip of Milk into Stomach

Nature Ramblings: The Coming of Clover

Vitamin B Prevents Hair from Graying: In Rats

Hints for Hot Weather Comfort in the Home

First Glances at New Books

In Science Fields

Transmutation of Elements Changes Chlorine into Argon

Japan Will Double Numbers while Europeans Decrease