The Brain
From wiki.thepatternofeverything.org
GRAY'S ANATOMY by Henry Gray F.R.S (c) 1995, 15th Edition
(pg. 47) The brain or encephalon...is contained n the cavity of the skull...The grey or vesibular nervous matter is found partly on the surface of the brain, forming the convolutions of the cerebrum, and the laminae of the cerebellum.
(pg. 47) The white matter of the brain is divisible into three distict classes of fibres: (a) diverging or peduncular fibres, (b)comissural fibres (c) association fibres