The honored guest at the 1961 meeting of the Congress was Professor Eduard Busch of Copenhagen, who contributed three lectures: (1) indications for surgery in glioblastomas; (2) brain-stem contusions: differential diagnosis, therapy, and prognosis; (3) structure and organization of a neurosurgical department. The remainder of the volume deals with the cerebral vascular system, beginning with anatomy (Kaplan), through circulation physiology (Kety) and nervous control (White), and ending with radiology (Taveras). The clinical aspects of occlusive disease are discussed by Fisher; of hemorrhage, by Magladery and by Richardson and Einhorn. Anticoagulant therapy is proposed (Siekert) for intermittent insufficiency, progressing stroke, cerebral emboli, and arteritis. The surgical treatment of stroke by arterial reconstruction is described by Crawford and DeBakey. Wright and Sweet cover occlusion of carotid and vertebral arteries for intracranial aneurysms, while Lougheed, Botterell, and Morley in one chapter and Norlén in another give the results of direct intracranial attack. Selverstone