. True manhood : a manual for young men . Fig, XL. Brain Cells. This aggregation of cells, like a powerful many-celled magnetic battery, is connected with every partof the system by nerves. These are the ivory trac-ings whose beauty and delicacy are described by theFrenchman, with a just enthusiasm. 152 TRUE MANHOOD. The cells are of a gray color, and the nerves arewhite. To the eye brain substance looks like a softgray jelly with white threads running through gray matter lies in bunches or piles called convo-lutions^ which give to the surface an undulating,wrinkled appearance. The whit
. True manhood : a manual for young men . Fig, XL. Brain Cells. This aggregation of cells, like a powerful many-celled magnetic battery, is connected with every partof the system by nerves. These are the ivory trac-ings whose beauty and delicacy are described by theFrenchman, with a just enthusiasm. 152 TRUE MANHOOD. The cells are of a gray color, and the nerves arewhite. To the eye brain substance looks like a softgray jelly with white threads running through gray matter lies in bunches or piles called convo-lutions^ which give to the surface an undulating,wrinkled appearance. The white nerves issue fromthem, converging from every direction and meetingin the center of the Fig. XLI. Vertical section of the brain,bellutn; 2, the eyeball. a, b, c, cerebrum; d, cere- Over the whole are spread three membranes and aprotecting wall of bones called the skull. Upon thisis the integument covered with hair. The first mem-brane directly under the skull is white, tough, endur-ing, like the ligaments that bind muscles to bones. Itis named dura mater. The next membrane is com-posed oi thin, delicate fibers, and is compared to a TRUE MANHOOD. 153 spiders web, hence called the arachnoid third one is a plexus, made up of capillaries, veinsand arteries, nerves and dehcate fibers. It dips downamong the convolutions, carrying blood, loaded withmaterial for the manufacture of electricity. It isnamed the//^ mater. The nerves are collected into bundles which aredistributed all over the body, resembling the branchesof a tree in their divisions. One branch goes to theeye, another to the ear, another to the mouth. Thereis a large bundle of them running down the cent
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