[ 33 ] 
11. On Out-lying Nerve-cells in the Mammalian Spinal-Cord. 
By Ch. S. Sherrington, M.A., M.B., &c., Fellow of Gonville and Cains College, 
Cambridge. 
Communicated by Professor M. Foster, Sec. R.S. 
Received and Read, Jan. 30, 1890. 
[Plates 3, 4.] 
To describe the ganglion-cells of the Mammalian spinal cord as confined to the grey 
substance of the cord is not quite strictly correct. Beisso* * * § was the first to draw 
attention to the fact, that apart from axis-cylinder processes which pass into the 
ventral roots from cells of the ventral cornu, there project also from those cells of the 
cornu which lie next the white column other branches to mingle with the fibres of the 
bundles of the ventral nerve-roots. The ganglion-cells of the grey matter often, by 
one or more of their processes, jut partially into the white matter. The descriptions of 
Beisso,! Pick,I and Schiefferdecker^ have further shown that in certain situations 
in the anterior and lateral columns, ganglion-cells lie outside the grey substance in 
the surrounding white matter. 
Since Gaskell, II in 1885, drew attention to the ganglion-cells in the cord of 
Alligator, lying at the periphery of the antero-lateral column, and, of course, quite 
removed from the central grey matter, I have often searched in the coid of the 
Mammalia for evidence of similarly situated cells; always, howevei’, without success. 
The search has, however, persuaded me that isolated ganglion-cells are no infrequent 
constituents of the white columns. The cords examined by me have been chiefly 
those of Man, the Monkey (Bonnet, Jew, and Bhesus), and the Dog. A number of 
sections have also been prepared from the Cat, Lion, Calf, Rat, Mouse, Rabbit, and 
Guinea-pig. The out-lying ganglion-cells in the white matter may conveniently be 
considered in three sections, according as their situation is within the anterior 
(ventral), the lateral, or the posterior (dorsal) white column respectively. 
* Torquato Bbisso, ‘Del Midoll. Spinal.,’ p. 37, 1873. 
t Loc. cit. 
J ‘ Arcliiv fill’ Psjchiatrie,’ vol. 4. 
§ ‘ Arcbiv Mikrosk. Anat.,’ vol. 10. 
II ‘ Proceedings of the Physiol. Soc.,’ Dec., 188-5. 
MDCCCXC.—B. 
F 
12.8.90 
