102 DR. BEALE, ON NERVE-FIBRES AND CELLS. 
ganglion-cells, from the pericardium of the ox. Each ganglion- 
cell is seen to be connected with several fibres. The bundle 
does not contain any nerve-fibre with the white substance of 
Schwann. The specimen shows evidently that the so-called 
Remak’s fibres are true nerve-fibres, and the structure, which 
has been described as the connective tissue capsule of the 
ganglion-cell, consists only of true nerve-fibres. If we 
accept the opinion entertained by some German observers, 
that Remak’s fibres are nothing but fibres of connective 
tissue, we are compelled to admit that there are ganglion- 
cells imbedded in connective tissue with no connection what- 
ever with nerve-fibres. In which case the physiological sig- 
nificance of these cells would be inexplicable. x 215. 
Prep. 2.—Large ganglion with several cells form the cord of 
the leech. Some of the cells are larger than others. Bundles 
of fibres are seen proceeding from the ganglion in six different 
directions. Some fibres, which spring from its upper and 
lower part, are observed in connection with those which arise 
from the sides. Some other fibres pass downwards through 
the ganglion without being connected with it. The ganglion 
is seen to be composed of several parcels of cells which are 
connected together by strands of fibres. The connections 
between the different cells are very numerous. x 215. 
Prep. 3 and 4.—Are two beautiful specimens which plainly 
show the origin of two fibres from the so-called unipolar 
ganglion-cells from the frog. The finest of the nucleated 
fibres is seen passing spirally round the other. This arrange- 
ment has not been previously described. Dr. Beale is en- 
gaged upon a memoir on this subject. x 215, 500. 
Prep. 5.—Shows several ganglion-cells, each of which is 
connected with a dark-bordered fibre. The second very fine 
fibre is not visible in this specimen. From the posterior root 
of spinal nerves of a frog. x 180. 
Prep. 6.—Very large ganglion from the posterior root of 
spinal nerves of the mouse. The nerve-fibres of the anterior 
and posterior root pass through the ganglion and mix 
together. Every cell is seen to be connected with many 
fibres which pass off in different directions. x 40. 
Prep. 7.—Two ganglion-cells with nerve-fibres from the 
superior cervical ganglion of the sympathetic of man. The 
nerve-fibres connected with these ganglion-cells are seen 
largely supplied with nuclei. x 215. 
Prep. 8.—A very small ganglion from the tongue of a 
mouse. It appears to be composed of about twelve cells. 
Nucleated nerve-fibres proceed from the ganglion in four 
different directions. x 700. 
