Figs, 
Fig. 
Fig. 
Fig. 
Fig. 
F.g. 
Figs 
Fig. 
Fig 
466 ME. J. h. CLAEKE ON THE GEET SUBSTANCE OE THE SPINAL COED. 
but I have certainly found a decided but slighter decussation in the cervicd 
enlargement. _ i o xi, -r^ 
37 to 45 represent transverse sections of the spmal cor o e • 
37 Plate XXII. Section at the first pair of cercical ner^'es. A ne oi (. ) p 
longed from the sides of the grey substance into the antero-lateral coliunns, 
enclosing bundles of their longitudinal fibres. 
38. Section through the upper part of the cervical enlargement. 
39. Section through the middle of the cervical enlargement. 
40. Section through the middle of the dorsal region. 
41. Section through the middle of the lumbar enlargement. 
42 & 43. Sections through the lower part of the lumbar enlargement. 
44 Plate XXV. Transverse section of one lateral half of the gre^ su 
through the middle of the lumbar enlargement, of the Tortoise, magnified > 
diameters :—D, posterior cornu; E, anterior cornu; O', anterior roots of the 
nerves; P, posterior roots; B, B', antero-lateral column, dhided into separate 
fasciculi by a beautiful network, formed by nerve-fibres and processes of nerve- 
cells from the grey substance. 
45 Plate XXV. Similar section through the middle of the cenucal enlargement ot 
’ the Tortoise, magnified 80 diameters. The cells of the anterior cornu present 
a more varied shape than in the preceding figure; and the network in the 
antero-lateral column is neither so considerable nor so uniform as in the ast 
46 Plate XXII. Cells from the gelatinous substance of the Ox, magnified 350 dia- 
jneters a, h, cells of small and intermediate size ; c, round, oval, and fusi- 
form nuclei of connective tissue. 
47, Plate XXII. Large cells from near the posterior border of the same, magni e 
220 (ii 0^111 ©tjGTS 
48 Plate XXII. Nucleated cells and free nuclei from the white columns of the 
spinal cord of a Calf, between three and four months old, magnified 420 dia- 
meters a, cut end of a nerve-fibre, showing a kind of sphal or concentric 
arrangement around the axis-cylinder; 5, 5, nucleated cells partially encircling 
the nerve-fibres, and attached to their sheaths ; c, c, separate nucleated cel s 
some with ramifying processes; d, two nucleated cells from a longitudinal 
section ; e, free granular nuclei. . . • i . 
49, Plate XXII. Large cells from a transverse section of the posterw) lesicuai 
columns of the Ox, magnified 220 diameters one of the processes run- 
ning in a nearly longitudinal direction. 
50, Plate XXII. Large cell from a lo7igitudinal section of the posterior vesicii ai 
columns, magnified 220 diameters a, process extending towards the poste- 
rior nerve-roots ; b, another extending towards the anterior cornu. 
Fi" 51 Plate XXII. Transverse section of the human tract us intermedio-latefalis, ‘oai 
Fig 
Fig 
Fig 
Fig. 
Fis; 
