Licence: Public Domain Mark
Credit: A contribution to the study of myelitis / by S.G. Webber. Source: Wellcome Collection.
Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.
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![at the anterior roots and the anterior cohimns. In the cer- vical region, they were more numerous in the anterior cohinins than they were at other heights. In tlie dorsal region, they were more numerous in the lateral colunms; and in the lumbar region, there were very few in the antero-lateral columns, but they were collected around the posterior roots and the poste- rior fissure. In all regions, occasionally one could be seen near the central canal. They generally were found near bloodvessels or in the thicker fibrous septa which run into the cord from the pia mater. A few were near the floor of 4:th vent, in the medulla. At about the middle of the cervical enlargement, were found many spots of exudation, es]3ecially in the gray matter. One extending a considerable distance longitudinally was just at the bottom of the anterior fissure, another occupied a part of the central canal, others were found around the bloodvessels near the centre of the cord, others in each posterior cornu, around the bloodvessels, and a few small faint spots were seen in the posterior white substance. None were found m the an- terior or lateral columns nor among the cells of the anterior cornua, only at the roots of these cornua. These spots were finely granular, seemed to separate thej^ro- per nerve-tissue, the fiuid from which they were formed forc- ing its way in between the libres. Under a high power, the larger one showed a striated appearance, the markings being- arranged almost concentrically, the centre of the large spot showing a tendency to fatty degeneration. At the end of a large spot, away from any bloodvessel, numerous blood-glo- bules were seen ; generally, however, these did not show, eitlier not being present, or being fused together so that tlie outline of the globule could not be distinguished. These spots were brightly tinted by carmine; the carmine also brought out and showed distinctly the presence of this exudation around nmne- rous small vessels where it would otherwise not have been sus- pected ; just enough being present among the other elements to give a light and uniform pinkish tint. Acetic acid, potassa, sulphuric acid and iodine, glycerine, spirits turpentine, and water, had no effect upon these spots of exudation. These same spots of exudation were seen also in the lumbar](https://iiif.wellcomecollection.org/image/b2228834x_0016.jp2/full/800%2C/0/default.jpg)
