Book Review Holt's Diseases of Infancy and Childhood . By the late L. Emmett Holt, M.D., and John Howland, M.D. Revised by L. Emmett Holt, Jr., M.D., Associate Professor of Pediatrics, Johns Hopkins University, and Rustin McIntosh, M.D., Carpentier Professor of Diseases of Children, Columbia University. Tenth Edition. D. Appleton and Company, New York and London. Price $10.00.