MULTIPLE NEUROMATA OF THE CENTRAL NERVOUS SYSTEM. HO’ 
Fig. 21. Nodule in relation to a commissural vessel. x 200. 
Fig. 22. Nodules in the pia of the lateral region of the cord and passing inwards from the periphery. 
Cf. fig. 35. x150. 
Pruare LY. 
Figs. 23-28. Kulschitzky-Pal modification of Weigert’s medullated sheath stain. Different levels of the 
lumbo-sacral cord: to show the medullated character of the fibres composing the nodules, 
Fig. 23. Large nodule, with very fine intertwining fibres, at anterior mesial angle of grey matter. x15. 
Fig. 24, Similar nodule, with slightly coarser fibres, within the mesial margin of anterior grey matter. x 20. 
Fig. 25. Nodule within a glial septum, together with a vessel in the pia showing numerous fibres within 
the adventitia. Cf. fig. 13. In successive serial sections a connection could be traced between the fibres in 
the vessel-wall and the fibres composing the nodule, x 35. 
Fig. 26 (x 100), fig. 27 ( x 160), and fig. 28 ( x 160) show high-power views of the nodules in figs. 23, 
24, and 25 respectively. 
Figs. 29-34. Cajal’s reduced silver method for axis-cylinders. Different levels of lower cervical cord : 
to show the presence of axis-cylinders in the fibres composing the nodules. 
Fig. 29. The nodule drawn in fig. 8. This nodule had its long axis parallel to the long axis of the cord. 
x 200. 
Fig. 30. Nodule, of more cylindrical shape, with its long axis at right angles to the long axis of the 
cord. Note the very fine character and intricate intertwining of the fibres composing the nodule. x 160. 
Fig. 31. Nerve fibres in the adventitial lymph spaces of the vessels at the base of the anterior median 
fissure and of the commissural vessels. These fibres in successive sections were traced to the nodule in 
fig. 29. x75. 
Fig. 32. Vessels passing to the anterior horn showing numerous fine fibres in the adventitia. x 200. 
Fig. 33. Similar vessel within the grey matter showing the fibres in the adventitia following the bending 
and the division of the vessel. x 160. 
Fig. 34. Intra-medullary course of the anterior root artery showing very fine fibres in the adventitia. 
x 250. 
Prats V. 
Figs. 35-39. Sections chosen from 3rd lumbar segment (cut serially) to trace the mode of formation of 
the nodules. Kulschitzky-Pal and picro-fuchsin. 
Fig. 35. Wedge-shaped nodule lying in the pia, opposite the ligamentum denticulatum, and extending 
inwards from the periphery. x 70. 
Fig, 36. Shows the fibres passing from this nodule in the adventitia of the lateral vessel to a nodule at 
the margin of the grey and white matter. x 50. 
Fig. 37. Nodule of fig. 36 showing the unravelling of the fibres into the general texture of the grey 
matter. x 180. 
Fig. 38. Fibres of nodule in fig. 35 passing inwards from the periphery, forming tuft-lke nodule, and 
fibres in a vessel-wall in the pia. x 180. 
Fig. 39. Fibres passing from nodule of fig. 35 in parallel strands towards the region of anterior roots. 
x 35. 
Fig. 40. Wedge-shaped nodule, at anterior mesial angle of anterior column, formed by fibres which have 
passed mesially from the anterior roots. Kulschitzky-Pal and picro-fuchsin. x 20. 
Figs. 41-43. Sections from 2nd sacral segment. Kulschitzky-Pal and picro-fuchsin. 
Fig. 41. Fibres passing in commissural vessel to anterior horn. x 50. 
Fig. 42. Very fine fibres, contorted irregularly, in the adventitial lymph spaces of the anterior central 
vessels at base of anterior fissure. Vessel dividing: one branch seen in fig. 41, another in fig. 43. x 50, 
Fig. 43. Branch of the anterior central vessel seen in fig. 42, passing to lateral grey matter with leashes 
of fine fibrils in its adventitia. x 50. 
TRANS. ROY. SOC. EDIN., VOL. XLVIII. PART III. (NO. 27). 114 
