Excerpts from a paper by Drs. Harry S. Gradle and Jules C. Stein, presented to the section on Ophthalmology of the American Medical Association Annual Meeting in 1924 in Chicago, and published by the A. M. A. Courtesy of the authors and of the A. M. A. has been extended the Illinois Society for the Prevention of Blindness for the publication of such sections of the paper, together with the illustrations, as are of special interest to the laity. Introductory note and supplementary case histories are given by Miss Marion A. Campbell, Secretary of the Illinois Society for the Prevention of Blindness.
