Dr. T. J. Ritter, of Ann Arbor, Michigan, a graduate of the regular School of Medicine at the University of Michigan, at Ann Arbor, and later one of the medical staff of the University, consented to furnish the necessary material to complete the Medical Department. Dr. Ritter, in over thirty years of actual practice, has met with all the exigencies of both city and country practice which have brought to him the ripe experience of what would be called a "physician's life-time." His success has been, in part, due to his honesty, kindliness and conscientiousness, as well as to his thorough training and natural adaptability to the profession. Besides writing the Causes, Symptoms, Preventives, Nursing, Diet, Physicians' Treatment, etc., he has examined each and every one of the Mothers' Remedies and added, when possible, the reason why that remedy is valuable. In short, he supplied in his remarks following each Mother's Remedy the Medical virtue or active principle of the ingredients. This lifts each Mother's Remedy into the realm of science,--in fact, to the level of a Doctor's Prescription. In writing his part, Dr. Ritter consulted, personally or through their works, considerably over one hundred of the acknowledged Medical Specialists of the world. Thus he has brought to you the latest discoveries of modern science,--the Medical knowledge of the world's great specialists. Dr. Ritter, therefore, wishes to acknowledge his indebtedness to the following: On the subject of Theory and Practice, to Dr. Wm. Osler, Oxford University, England; Dr. James M. Andres, Ph. D., Medico-Chirurgical College, Philadelphia, Pa.; Dr. Hughes Dayton, Vanderbilt Clinic-College of Physicians and Surgeons; Dr. Hobart A. Hare, Jefferson Medical College, Philadelphia, Pa.; Dr. Temple S. Hoyne, Hahnemann Medical College, Chicago, Ill.; Dr. A. E. Small, Hahnemann Medical College, Chicago, Ill.; Dr. C. G. Raue, Hahnemann Medical College, Philadelphia, Pa.; Dr. John King, Eclectic Medical Institute, Cincinnati, Ohio. On the subject of Materia Medica to Dr. John Shoemaker, Medico-Chirurgical College, Philadelphia, Pa.; Dr. Hobart A. Hare; Drs. Hemple and Arndt, Homeopathic, and others. On the subject of Obstetrics, to Dr. W. P. Manton, Detroit Medical College, and others. On the subject of Surgery, to the American Text Book on Surgery, edited by Drs. Keen and White, of Philadelphia, and many contributors. On the subject of Nervous Diseases, to Dr. Joseph D. Nagel and others. On the subject of the Eye, to Dr. Arthur N. Alling, of Yale University. On the subject of the Ear, to Dr. Albert H. Buck, College of Physicians and Surgeons, New York City; Dr. O. A. Griffin, University of Michigan and others. On the Nose and Throat, to Dr. James B. Ball, London, England. On the Skin, to Dr. James N. Hyde, Rush Medical College, Chicago, Ill.; Dr. Alfred Schalek, Rush Medical College, Chicago, Ill. On the Rectum and Anus, to Dr. Samuel G. Gant, Ph. D., Post-graduate College, New York City.