Cerebrum

Larger portion of the brain, most intimately connected with all the phenomena of life and thought. It consists of two lateral halves, the hemispheres, each resem bling an ovoid flattened on one side, united together and connected with the cerebellum and medulla oblong at a. The outer surfaces are divided in a complicated manner by a number of fi ures, between which are the convolutions, and in the interior are several cavities, the ventricles. Internally it consists principally of white nerve ti ue, with several collections of gray matter, and externally of gray ti ue made up of a number of microscopic layers, the extent of which depends largely upon the number and complexity of the convolutions, and is believed to determine the intelligence. See BRAIN.