ERNEST L. ELIEL is W. R. Kenan, Jr. Professor Emeritus at the University of North Carolina at Chapel Hill. He is the author of Stereochemistry of Carbon Compounds and Elements of Stereochemistry, coeditor of the Wiley series, Topics in Stereochemistry, and coauthor of Conformational Analysis. The recipient of numerous academic and scientific awards and honors, Professor Eliel is Past President of the American Chemical Society and a member of the National Academy of Sciences.