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Arno (11) described spiral fibres in the spinal ganglia. Their ex- 
istence was denied by LENHOSSEkR (9). In his publication “Unter- 
suchungen über die Spinalganglien des Frosches”, we find the follow- 
ing statement: “Die Existenz einer Spiralfaser bei den Nervenzellen 
der Spinalknoten ist heutzutage, soviel ich glaube, bereits überall auf- 
gegeben, und es kann bloß darüber discutirt werden, was zur Annahme 
einer solchen geführt habe”. Attention has already been drawn to the 
fact that the branches coming from the axis cylinder are often wound 
spirally about the axis cylinder (see Fig. 2), and in a number of pre- 
parations, as above mentioned, the sympathetic fibres make numerous 
twists about the axis cylinder before breaking up into the network. 
I suggest as a possibility that Bipper and ARNOLD may have seen 
one or the other of the above structures. 
The cells described by Hans Daak (12) may also fall under this 
category. In his article “Zur Kenntnis der Spinalganglienzellen beim 
Säugetier”, he makes the following statement, which I have translated 
very freely. “In some cells the large process divides within or just 
outside of the capsule into a number of fine, twisted, medullated 
branches. These may branch and reunite, and from them a varying 
number of end-branches are given off, which lose their medullary 
sheath and seem to terminate in the ganglion cell.” The number of 
these branches varies from two to twelve, as does also their course 
and arrangement, if we may judge from his figures. As to the exact 
relation of these processes to the cell body, a definite answer could 
not be given. In one preparation stained in Enruicu’s haematoxylin, 
he believes to have seen the fibrillae of these branches radiate into 
the protoplasm of the cell. I have not been able to investigate the 
spinal ganglia of the horse, and therefore cannot say whether the cells 
described by DAArE are like the cells described by me. Judging from 
his figures, such a conclusion would seem admissable, the preparations 
stained in methylene blue giving a clearer insight into the ending of 
the secondary branches. In a preparation such as is reproduced in 
Fig. 3, I can easily see how in a macerated and teased preparation, 
where all the structures present very much the same appearance, one 
might be led to believe that the branches terminated in and not on 
the cell. It must however be remembered that the fibres making up 
the “Faserknäuel” mentioned by Daas are, in part at least, medullated 
and coarser than the ones seen by me, which, as far as I have been 
able to determine, are not medullated. 
As to the function of the cells to which special attention has been 
drawn, I have no suggestions to make, Their structural peculiarity 
