Greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons.
1 M. Brown-Sequard has proved by numerous experiments that the gray substance transmits sensitive impressions and muscular stimulation.
2 And in the gray substance of the vault door were the paler gray shapes of my fingers.
3 This gray substance lies in folds or convolutions, the furrows or sulci, dipping deeply into the interior of the brain.
4 Splattered on the blue toile wallpaper nearest the bedpost, intermingled with red blood, was a gray substance I knew to be brain.
5 In this country sterility reigns throughout the whole region of gray matter in the brain-itis sterility in the great gray substance - if you wish-
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