The appropriateness of the title of my paper may, strictly speaking, well be questioned, for to the well-informed physician or surgeon no intracranial hemorrhage, of any considerable amount, could long remain concealed. I have applied the term, and shall limit my remarks, to cases in which there is absence of outward flow of blood and of fracture or fissure of the cranium, but in which the presence of a hemorrhage is usually indicated by unmistakable symptoms relating to the intellectual, sensory and motor functions. The following case illustrates so typically the usual symptomatology and course, as well as the results to be expected both under the expectant and the operative plans of treatment of this important class of cases, that I wish to put it on record, and might well offer it in lieu of any dissertation on the subject. If, in attempting to present briefly the most advanced views