Book Review The Diseases of Infancy and Childhood . For the Use of Students and Practitioners of Medicine. By L. Emmett Holt, M.D., Sc.D., LL.D., Professor of Diseases of Children in the College of Physicians and Surgeons (Columbia University), New York; Attending Physician to the Babies' and Foundling Hospitals, New York; assisted by John Howland, A.B., M.D., Professor of Diseases of Children in Washington University, St. Louis; late Associate in Diseases of Children in the College of Physicians and Surgeons, New York. Sixth edition, fully revised. pp. 1,116. With two hundred and forty illustrations, including eight colored plates. New York and London: D. Appleton & Co. 1911.