4 Cincinnatt Society of Natural Fiistory. 
nucleus has been described as “vortex” or “spiral,” or 
sometimes ‘“Gitterahnliche Anordnung.”’ On the contrary, 
the fibrillar bundles at the periphery present comparatively 
long sections. In this section, the neuraxone is not yet 
shown. 
Fig. 4 is a section of the cell- body at another level. In 
this figure, three dendrites, nucleus, and neuraxone are 
clearly shown. ‘The neuraxone ‘‘4”’ lies at one corner of the 
base of the rectangular cell-body. An intimate connection 
of each dendrite with that of the other, and also of all the 
dendrites with neuraxone is clearly shown in this figure. 
A curious arrangement of the fibrils is noticeable very near 
the axone hillock, where the fibrillar bundles have a beauti- 
ful spiral arrangement. This spiral arrangement is produced 
by the fibrils coming from various dendrites as is shown in 
the illustration. In this figure, connecting fibrils between 
the dendrites (a) and (c) are shown very clearly. 
Fig. 5 isa section passing through the periphery of the 
side opposite to that shown in Fig. 1. In this figure, four 
dendritic processes are plainly shown — one from each corner 
of asomewhat rectangular-shaped cell-body. The position 
from where the neuraxune will arise in other section is’ 
marked by ‘“‘4.” A clear oblong space near the center of 
the cell-body is the place where the nucleus lies in the other 
sections. The fibrillar bundles which come from the den- 
drite (a) run towards the dendrites (c,d) along the one side 
of the nucleus, and finally enter the dendrites (c,d). Along 
the course, a few small fibrillar bundles diverge towards the 
periphery of the cell-body. The fibrillar bundles which 
come from the dendrites (6) run toward the dendrites (c, d) 
in a somewhat similar manner to those from the dendrite (a). 
In this case, the fibrillar bundles divide into two branches at 
the nucleus and after encircling the nucleus, they enter in the 
dendrites (c, a) and become continuous with those from the 
dendrite (a). From the base of the dendrite (4), small fibrillar 
bundles are distributed toward the neuraxone. From the 
dendrites c, d, the bundles of fibrils arise, and run toward the 
neuraxone. Along their course, these bundles are increased 
by the addition of numerous bundles of fibrils which come 
4 
