Table of Contents

In this Issue

Letters

The Fight for Freedom
Dr. DuBridge's 1950 Commencement Address—a timely reminder that freedom is not only an end, but a means; not only a goal to be attained, but a powerful weapon to use in its attainment
by Lee A. DuBridge

Earthquake Patterns
New research at the Institute's Seismological Laboratory sheds some new light on earthquakes—and challenges some long-standing beliefs

The Month at Caltech

Science in Art: Caricatures of Men of Science
by Earnest C. Watson

The Beaver
by Jim Hendrickson

Alumni News

Personals

Books