The brain is egg-shaped, and of two parts, the large brain (cerebrum), and the little brain (cerebellum). These are composed of a white and gray substance, which in the large brain is so folded and wrinkled that it looks like the meat of an English walnut; in the little brain it is so arranged that it resembles a tree, and is called arbor vitæ, tree of life. The mind does its thinking through the large brain, and controls its muscles through the little brain.
A drunken man can not walk straight because alcohol has hurt the little brain; he can not think straight because it has poisoned the large brain.
C, the large brain (cerebrum). B, the small brain (cerebellum). S, a portion of the spinal cord.
QUESTIONS ON THE NERVOUS SYSTEM.
Where is your brain?—"In my skull."
What color is the brain?—"Gray and white."