JOHNSON, HOSMER A., M.D., LL.D.,

Emeritus Professor of Practical Medicine in the Chicago Medical College, Chicago.

LEFFERTS, GEORGE M., A.M., M.D.,

Professor of Laryngoscopy and Diseases of the Throat in the College of Physicians and Surgeons, New York; Consulting Laryngoscopic Surgeon to St. Luke's Hospital, etc.

LONGSTRETH, MORRIS, M.D.,

Physician to the Pennsylvania Hospital, Philadelphia.

LOOMIS, ALFRED L., M.D., LL.D.,

Professor of Pathology and Practice of Medicine in the University of the City of New York.

LYNCH, JOHN S., M.D.,

Professor of Principles and Practice of Medicine in the College of Physicians and Surgeons, Baltimore.