Clinical methods now enable us to secure more accurate information than was formerly possible in cases in which fracture of the skull is suspected; but because of limitations in the roentgen-ray diagnosis, particularly in connection with fracture at the base of the skull, considerable confusion still exists. The problem of the fractured skull becomes more clearly defined if when such a group of cases is analyzed instances are excluded in which a fracture is not definitely proved to exist. The complexity caused by associated injuries to the brain must be borne in mind. It is not unlikely that the experience of other clinicians, obtained when they apply such restrictions, will be similar to our own in finding that the number of cases in which a skull fracture may be actually demonstrated is overrated. Care must be taken to exclude doubtful cases if the problem is to be simplified, even though