The past quarter of a century has witnessed an increase in the number of cerebrocranial injuries in both the larger centers and the rural districts throughout the land. What was at the beginning of this century a rare surgical problem has become one of frequent occurrence in hospital practice. The American Medical Association and the American College of Surgeons have both given it wide publicity, and scientific statistical exhibits on this subject have been displayed at their annual meetings; state societies and regional meetings have featured papers on it; journals have published excellent articles covering all phases of the subject; research workers have contributed their share, and hospitals have furnished equipment and supplies desired by surgeons in the treatment of these patients. The result of all these combined efforts has been to decrease the mortality; nevertheless the incidence has rapidly increased (table 1).
Recent articles have shown remarkable agreement in