September, page 17—In the story on the diamagnetic anomaly in copper chloride the Cleveland State University group that collaborated with A. P. Rusakov in 1977 consisted of C. W. Chu and Steinar Huang. S. Z. Huang of the University of Houston, who was mentioned in the story, was not a member of the group.

September, page 26—The names of O. W. Richardson and P. Langevin were transposed in the caption of the photograph identifying the participants of the Seventh Solvay Congress.

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