Year Book of Pediatrics, 1950.

The mid-century marks the fiftieth anniversary of the Year Book of Pediatrics. The occasion is observed by the inclusion of 17 authoritative guest editorials. They are concise, three to four pages in length, and they cover a wide range of subjects. For the second time the editor has included a general discussion of pediatric advances of the year. In it he makes documented reference to fourteen new developments. They include not only the significant advances in pediatric theory and practice but also the growing trend toward a broadening of the responsibilities of pediatricians in the fields of education and community health. The section affords a stimulating introduction to the book. As in the past, the abstracts are well selected. Editorial comment has been extended. In a number of instances it has been expanded into a concise review of recent trends. These new features give one a sense of the past