CALIFORNIA
Fluoridation of Water Supplies.
—Pleasanton and Rio Vista will probably be the first California communities to add fluoride to their public water systems for the reduction of dental decay, the permits having recently been approved by the state board of public health.
Designated "Perpetual Student."
—Dr. Emile F. Holman, professor of surgery, Stanford University School of Medicine, San Francisco, was recently designated "Perpetual Student" of St. Bartholomew's Medical College, London, following a period as visiting professor of surgery at St. Bartholomew's Hospital, April 26 to May 29. Other Americans so designated have been Drs. Harvey Cushing, Hugh Cabot, and Evarts Graham, St. Louis.
Visiting Professor of Oncology.
—Dr. W. Edward Chamberlain, Philadelphia, has been appointed 1951 visiting professor of oncology in the Cancer Research Institute of the University of California Medical School, San Francisco. Dr. Chamberlain, former chief of radiology at Stanford University School of Medicine, is presently head