On page 512 of the April 1980 issue, in the book review by Ralph Colp, Jr., M.D., of The Emerging Goddess: The Creative Process in Art, Science, and Other Fields by Albert Rothenberg, M.D., the fourth paragraph in the second column should read, "Another unanswered question about Darwin's discovery of natural selection is why did he come to believe at once that natural selection could be proved. . . . " The staff regrets this error.