Cerebellum

Portion of the brain in the hinder and lower part of the skull, beneath the cerebrum and behind the medulla oblong at a, consisting of two connected lateral halves, indented with transverse, somewhat curved, closely placed furrows. It consists internally of white nerve ti ue, and externally of gray, so arranged that its sections resemble the foliage of the Arbor-Vitæ. A now abandoned view was that it was the seat of the sexual instinct, but all that is known of it is that it controls the balancing of the body and po ibly a ists in the co-ordination of muscular movements.