422 
As arule, only a few of the cells show the structure here alluded to, 
six to eight in a section might represent an average, but of this 
number only one or perhaps two cells show the structure reproduced 
in the above diagrams. More often one, two or three of the end-discs 
into which the delicate process can be traced, are to be seen within 
the capsule, their connection with the axis cylinder not being observed. 
I have found these cells usually immediately under the capsule of the 
ganglion, although in some few instances they were found among the 
unipolar cells some distance away from the capsule. 
It is difficult to state whether the multipolar cells described by 
DissE (1) as found in the spinal ganglia of frog larvae, develope into 
the cells here described. This does not seem the case, as the den- 
drits of the cells described by him, if I interpret his figures correctly, 
terminate outside of the capsule. Multipolar cells, such as were de- 
scribed by him, have not been found in Rana C. 
Mention should again be made of the large number of nuclei found 
within the capsule usually surrounding the axis cylinder and that por- 
tion of the cell body from which the axis cylinder is given off. They 
are seen in larger number than is the case with the ordinary unipolar 
ganglion cells. Some of these nuclei no doubt belong to the cells 
lining the capsule; others may represent the “polar nuclei” belonging 
to the “polar-cells” first described by Courvorster (8) and more care- 
fully studied by LENHoss£k (9), although the latter states that their 
number does not exceed three, even in the larger cells. mn 
In a number of preparations I have observed fine nerve fibres, 
which are sometimes wound spirally about the axis cylinder, again 
having a very tortuous course and breaking up into a network of 
finer branches which terminate within the capsule of the above de- 
scribed cells. I have gained the conviction that the network represents 
the ending of the sympathetic fibres found in the ganglion. In some 
few instances I have been able to trace these fine, non-medullated 
fibres some distance from the cell on which they end, and toward a 
small bundle of sympathetic fibres which seem to come from the distal 
portion of the ganglion. These fibres do not seem to end in a peri- 
cellular basket, such as described by EHRLICH, Cayan and DOGIEL, 
but rather to break up into a fine intra-capsular network which sur- 
rounds the axis cylinder and interlaces with the secondary branches 
coming from it; and only now and then could they be traced on to 
the adjacent portion of the cell. The fibrillae of this network are 
usually very fine, finer than the branches coming from the axis cylinder. 
It is of interest to recall that many years ago BippEer (10) and 
