— 210 — 
but each part is drawn under the cam. lue.) gc Ganglion 
cells. ?^Cp lgc2 Large ganglion cells. mp Mixed process 
(or nervous process?). hr Branches given off from the 
mixed process. phr Branches of the protoplasmic pro- 
cesses. wr^, vnr^, vnr^, vnr^ Ventral nerve-roots, which 
are not transsected in the same section, but which are 
drawn here to show their possition. nhr Side branch given 
off from a nerve-tube, of the ventral nerve-root. nf Nerve- 
tubes. tnt Transsected nerve-tubes, v Vacuoles which 
possibly also are transsected nerve-tubes. Mnt MuUers 
nerve-tubes transsected; those in the one half of the spinal 
cord are only illustrated. nc Neuroglia cell. nn Neu- 
roglia nuclei, situated in the grey substance. /j, Neu- 
roglia fibres. epi, ep.^, ep^ Processes from the cells sur- 
rounding the central canal. n Nuclei of the sheath en- 
veloping the nerve-tubes of the dorsal nerve-root. 
Fig. 93. A. The transsected spinal ganglion, through which the 
nerve-tubes of the dorsal nerve-root pass. At a the 
nerve is somwhat shortened on account of the limited 
space of the plate, sh Wall of connective tissue surround- 
ing the cavity in which the spinal cord is situated. 
sgc Transsected ganglion cells. w" Nuclei situated in the 
sheaths of the ganglion cells. vr Ventral ramus issuing 
from the ganglion. dr Dorsal ramus issuing from the 
ganglion, w' Nuclei situated in the sheaths of the nerve- 
tubes of the latter ramus. (Hardened in Potassium bi- 
chromate (2 — 3 ^/\^), stained with neutral horax-carminé). 
» 94. (Magnified 154 diameters; Zeiss CC, i.) Part of a trans- 
verse section through the spinal cord. mp Mixed process 
of a ganglion cell (which was not, hower, seen in the 
section). phr Protoplasmic branches given off from this 
process. gc-^, gc^ Ganglion cells. npr Nervous processes. 
ppr Protoplasmic processes. nf, nf^, nf.^ Nerve-tubes or 
fibrillæ some of which {nf-^, nf^) have varicose thickenings 
and give off branches. cec Cell of the epithelium sur- 
rounding the central canal. grs Border of the grey sub- 
stance. (Stained according to the chromo silver method, 
vide p. 77). 
» 95. (Magnified 132 diameters; Zeiss AA, 4.) Part of a trans- 
verse section of the spinal cord. The letters have the 
same signification as in fig. 93. grs Border of the grey sub- 
