Results of hemisection of the spinal cord in monkeys / by Frederick W. Mott ; communicated by Professor Schäfer.
- Frederick Walker Mott
- Date:
- 1892
Licence: Public Domain Mark
Credit: Results of hemisection of the spinal cord in monkeys / by Frederick W. Mott ; communicated by Professor Schäfer. 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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![Photos. 25 and 26 show well the degeneration in the antero-lateral region and the pyramidal tract. These sections were stained by a new method devised by Professor Schafer, especially valuable for photo- graphic reproduction, hence the degeneration is better shown than in the other sections below the lesion although much more remote. 27.—The brain and portion of cortex removed therefrom in Case VII. Figs. 2, 3, 4 are tracings of the photos, of lesions shown in Plate 1. 2 corresponds to 9, Plate 1, Case lY. 3 ,, 8, ,, Case V. 4 ,, 10, ,, Case IX. The dark portion represents the area of absolute destruction. PLATE 4. [Photographs of the sections were sent with the paper, but as there was some doubt about reproducing them with sufficient clearness, prints taken from the negatives were given to Mr. Collings together with the specimens, and he has faitlifully rej)roduced the same.] Fig. 5.—Section at the 8th dorsal segment, Case III. The direct cerebellar fibres have reached the periphery and are seen as a distinct tract of undegenerated fibres. Fig. 6.—Section at the 10th to ILth dorsal segment. The degenerated fibres of the pyramidal tract extend up to the periphery, the fibres of the direct cerebellar tract have not yet passed through the lateral column. Fig. 7.—The degenerated pyramidal tract at the level of the 11th dorsal. Numerous large healthy fibres scattered among the degenerated. These are presumably fibres on their way to the direct cerebellar and the antero-lateral tracts. Fig. 8.—'fhe degenerated antero-latex'al tract at the upper part of the medulla intersecting the arciform fibres. Fig. 9.—Descending degeneration of the periphery of the anterior column at the level of 2nd lumbar. All the above are magnified about 150 diameters. Fig. 10.—The comma-shaped degeneration (shown also in Plate 2, No. 20), magnified about 70 diameters.](https://iiif.wellcomecollection.org/image/b22297066_0065.jp2/full/800%2C/0/default.jpg)
