With this issue of The QUARTERLY we welcome to our Editorial Board two new members: Dr. Sander M. Abend of New York City and Dr. James T. Mc-Laughlin of Pittsburgh.

We also take this opportunity to express our gratitude to two Editors who have retired from our Board: Dr. H. Robert Blank and Dr. Norman Reider, both of whom joined the Editorial Board in 1954. The QUARTERLY could not be published without the invaluable help of the dedicated members of its Editorial Board, on which Drs. Blank and Reider served for many years.

We express our thanks also to colleagues other than our Editors who graciously agreed to read papers submitted to us during the past year: Dr. Charles Fisher, Dr. Herbert J. Goldings, Dr. Eugene Halpert, and Dr. Ernst A. Ticho.