Brain

(bran) [AS., brcegen\ That part of the central nervous system contained in the cranial cavity, and consisting of the cerebrum, the cerebellum, the pons, and the medulla oblong at a. B., Abdominal, the solar plexus. B., After-. See Metencephalon. B.-axis, that portion of the brain substance including the island of Reil, the basal ganglia, the crura, pons, medulla, and cerebellum. B. -bladder, a cerebral vesicle of the embryo. B. Fever. See Meningitis; also synonym of Typhoid Fever. B., Fore-. See Prosencephalon. B., Hind-. See Epencephalon. B., Mid-. See Mesencephalon. B., Railway-, a condition analogous to railway spine and characterized by cerebral disturbance. See Erichsen ’s Disease, in Diseases, Table of. B. Sand, a gritty mineral matter found in and about the pineal gland, consisting mainly of calcium and magnesium carbonates and phosphates. B.-tire, a condition of brain-exhaustion due to exce ive functional activity. 155