COLLECTANEA JACOBI IN EIGHT VOLUMES VOLS. I, II AND III, PEDIATRICS VOLS. IV AND V, GENERAL THERA- VOLS. VI AND VII, IMPORTANT AD. VOL. VIII, MISCELLANEOUS ARTI COLLECTED ESSAYS, ADDRESSES, SCIENTIFIC PAPERS AND MISCELLANEOUS WRITINGS OF A. JACOBI M. D. UNIVERSITY OF BONN (1851); LL. D. UNIVERSITY OF MICHIGAN (1898), COLUMBIA (1900), YALE (1905), HARVARD (1906). Professor of Infantile Pathology and Therapeutics New York Medical College (1860-1864); Clinical Professor of Diseases of Children, New York University Medical College (1865-1869); Clinical Professor of Diseases of Children,_College of Physicians and Surgeons, Columbia University (1870-1899); Professor of Diseases of Children in the same (1900); Emeritus Professor of Diseases of Children in the same (1903); Consulting Physician to Bellevue, Mount Sinai, The German, The Woman's Infirmary, Babies', Orthopedic, Minturn and Hackensack Hospitals. Member of the New York Academy of Medicine (1857), Medical Society of the City and County of New York, Medical Society of the State of New York, Deutsche Medizinische Gesellschaft of New York, New York Pathological Society, New York Obstetrical Society, Association of American Physicians, American Pediatric Society, American Climatological Association, Congress of American Physicians and Surgeons, American Medical Association, International Anti-Tuberculosis Association, Association for the Advancement of Science; Associate Fellow of the College of Physicians in Philadelphia, Société de Pédiatrie de Paris, Société d'Obstétrique, de Gynécologie et de Pédiatrie de Paris, American Academy of Arts and Sciences; Foreign Member of the Gesellschaft für Geburtshülfe in Berlin; Corresponding Member Physicalisch-Medizinische Gesellschaft of Würzburg, Gynecological Society of Boston, Obstetrical Society of Philadelphia, Gesellschaft für innere Medizin und Kinderheilkunde in Wien. Honorary Member Yonkers Medical Association, Louisville Obstetrical Society, Abingdon, Va., Academy of Medicine, Brooklyn Medical Society, Medical Society District of Columbia, New York Obstetrical Society, Medical and Chirurgical Faculty of Maryland, American Laryngological Association, Pediatric Society of St. Petersburg, Pediatric Society of Kiev, Royal Academy of Medicine, Rome, Deutsche Gesellschaft für Kinderheilkunde, Verein für Innere Medizin of Berlin, Royal Society of Medicine of Buda Pesth. IN EIGHT VOLUMES EDITED BY WILLIAM J. ROBINSON, M. D. NEW YORK 1909 CONTENTS VOLUME VI PAGE An address delivered before the Eleventh International Read before the Section on Medicine of the College Read before the N. E. Association of Graduates of |