. A manual of diseases of the nervous system. 892 SPINAL (JORD. myelin, and it is probable tbat these regain tbe power of conducting,in spite of tbe persistence of considerable, and even dense sclerosis in ::?s^r «?• :*-; ^o. Pia. 111.—Pressure-myelitis; portions of the section D in Fig. 110 morehighly magnified. A, from the grey matter, numerous angular andfusiform cells; vessels with walls thickened by a growth of cells, the cavity, which in some is obliterated. B, from the whitecolumns ; thickening of the interstitial tissue, nerve-fibres in partdestroyed, in part narrowed J a ve
. A manual of diseases of the nervous system. 892 SPINAL (JORD. myelin, and it is probable tbat these regain tbe power of conducting,in spite of tbe persistence of considerable, and even dense sclerosis in ::?s^r «?• :*-; ^o. Pia. 111.—Pressure-myelitis; portions of the section D in Fig. 110 morehighly magnified. A, from the grey matter, numerous angular andfusiform cells; vessels with walls thickened by a growth of cells, the cavity, which in some is obliterated. B, from the whitecolumns ; thickening of the interstitial tissue, nerve-fibres in partdestroyed, in part narrowed J a vessel with thickened walls. C, glycerinepreparation from white substance; abundant products of degenerationof the nerve-fibres, in part aggregated into granule masses. D, sectionof a nerve-root passing by compressed area; increase of interstitialtissue, many nerve-fibres narrowed, some with swollen axis-cylinders. the part. In extreme cases all the fibres seem to be destroyed at thepoint of chief compression, but there is never an actual division of thecord itself. The grey matter can scarcely be distinguished from thewhite, even with the microscope, and the ganglion-cells becomeshrunken and atrophied. The walls of t
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