CHAIRMAN: DR. EDWARD COWLES, Waverley, Mass. SPEAKERS: DR. PIERRE JANET, Collège de France, Paris. DR. MORTON PRINCE, Boston. SECRETARY: DR. ADOLPH MEYER, New York City. DEPARTMENT 16--SOCIOLOGY (_Hall 7, September 20, 4.15 p. m._) CHAIRMAN: PROFESSOR FRANK W. BLACKMAR, University of Kansas. SPEAKERS: PROFESSOR FRANKLIN H. GIDDINGS, Columbia University. PROFESSOR GEORGE E. VINCENT, University of Chicago. SECTION A. SOCIAL STRUCTURE. (_Hall 15, September 21, 10 a. m._) CHAIRMAN: PROFESSOR FREDERICK W. MOORE, Vanderbilt University. SPEAKERS: FIELD MARSHAL GUSTAV RATZENHOFER, Vienna. PROFESSOR F. TOENNIES, University of Kiel. PROFESSOR LESTER F. WARD, U. S. National Museum. SECRETARY: PROFESSOR JEROME DOWD, University of Wisconsin. SECTION B. SOCIAL PSYCHOLOGY. (_Hall 15, September 23, 10 a. m._) CHAIRMAN: PROFESSOR CHARLES A. ELLWOOD, University of Missouri. SPEAKERS: PROFESSOR WM. I. THOMAS, University of Chicago. PROFESSOR EDWARD A. ROSS, University of Nebraska. SECRETARY: PROFESSOR E. C. HAYES, Miami University. DIVISION E--UTILITARIAN SCIENCES (_Hall 1, September 20, 10 a. m._) SPEAKER: PRESIDENT DAVID STARR JORDAN, Leland Stanford Jr. University. DEPARTMENT 17--MEDICINE (_Hall 1, September 20, 4.15 p. m._) CHAIRMAN: DR. WILLIAM OSLER, Johns Hopkins University. SPEAKERS: DR. WILLIAM T. COUNCILMAN, Harvard University. DR. FRANK BILLINGS, University of Chicago. SECTION A. PUBLIC HEALTH. (_Hall 13, September 21, 10 a. m._) CHAIRMAN: DR. WALTER WYMAN, Surgeon-General of the U. S. Marine Hospital Service. SPEAKERS: PROFESSOR WILLIAM T. SEDGWICK, Massachusetts Institute of Technology. DR. ERNST J. LEDERLE, Former Commissioner of Health, New York City. SECRETARY: DR. H. M. BRACKEN, St. Paul, Minn. SECTION B. PREVENTIVE MEDICINE. (_Hall 13, September 21, 3 p. m._) CHAIRMAN: DR. JOSEPH M. MATHEWS, President of the State Board of Health, Louisville, Ky. SPEAKER: PROFESSOR RONALD ROSS, F.R.S., School of Tropical Medicine, University College, Liverpool. SECRETARY: DR. J. N. HURTY, Indianapolis, Ind. SECTION C. PATHOLOGY. (_Hall 13, September 22, 10 a. m._) CHAIRMAN: PROFESSOR SIMON FLEXNER, Director of the Rockefeller Institute. SPEAKERS: PROFESSOR LUDWIG HEKTOEN, University of Chicago. PROFESSOR JOHANNES ORTH, University of Berlin. PROFESSOR SHIBASABURO KITASATO, University of Tokio. SECRETARY: DR. W. MCN. MILLER, University of Missouri. SECTION D. THERAPEUTICS AND PHARMACOLOGY. (_Hall 13, September 24, 3 p. m._)