LABORATORY OF THE McLEAN HOSPITAL, SOMER¬ VILLE, MASS. BY PRESIDENT G. STANLEY HALL, Clark University, Worcester, Mass. I have seen^the report of the above laboratory prepared for Professor Delabarre of Brown University, in response to a series of questions in his circular of September 24, 1894, which is to appear in a report he is making upon psychological laboratories in America for the Année Psychologique. A laboratory of this kind in a hospital for the insane marks a step of so great significance that, in my judgment, it can not fail to interest not only university psychologists, but all who care for the insane. For this reason, and with Professor Delabarre’s consent, I have incorporated parts of the above report, with many modifications of form, and supple¬ mented it by my own long-standing personal acquaintance with the McLean Hospital, its personnel and its laboratory, for the American Journal or Insanity, as follows : The laboratory is now in charge of August Hoch, M. D., assistant physician and pathologist. Doctor Hoch is a native of Basle, Swit¬ zerland, and was formerly neurological assistant at the Johns Hopkins Hospital. He has just returned from two years in Europe, 1893-94. After studying histology and pathology at Strassburg, he was in the laboratories of Wundt, Mosso, and Kraepelin ; and studied also organic chemistry and chemical pathology at Heidelberg. The work of this laboratory was begun in 1889, for the clinical purposes of the hospital. It is sought to combine neurological studies in the departments of psychiatry and physiological psychol¬ ogy, and their relations with anatomical and chemical pathology, etc. The other persons engaged in these studies are the medical officers of the hospital, viz.: Superintendent, Edward Cowles, M. D., clinical instructor in mental diseases in Harvard Medical School, and Professor of Mental Diseases, Dartmouth Medical School ; assistant physicians, Geo. T. Tuttle, M. D., Daniel H. Fuller, M. D., Charles G. Dewey, M. D., E. Stanley Abbot, M. D.j also three medical internes, Cleon M. Hibbard, Henry P. Love- well, and Joseph A. Capps. The former assistant physician in charge of the laboratory was William Noyes, M. D., now assistant physician at the Massachusetts Hospital for Dipsomaniacs and