The officers of the third International Congress of the History of Medicine are : President of honour, Sir Norman Moore, Bt., M.D. ; president, Dr. Charles Singer; treasurer, Mr. W. G. Spencer, O.B.E., M.S. ; general secretary, Dr. J. D. Rolleston ; vice-presidents, Sir D'Arcy Power, K.B.E., F.R.C.S., Dr. Tricot-Royer of Antwerp, president of the first International Congress, and Drs. Jeanselme...