FINER STRUCTURE OF SYNAPSE 139 



work we find in this preparation brown- or black-stained points of 

 different caliber, which are certainly the cross-sections of nerve 

 fibers. The 'Ftillnetz' is less sharply marked, looks lighter than 

 the Golgi net; the mesh itself is larger and more irregular and 

 the mesh beams are thicker than those of the Golgi net-work. 

 Contrary to the statement of Bethe (7), I could observe very 

 distinctly that the Golgi net beams are connected with glia 

 nuclei by means of somewhat extended bases, and also with the 

 walls of capillaries. 



In the Heidenhain preparations of formol material I could 

 confirm similar relations of the Golgi net and the Tiillnetz,' as 

 described above (fig. 5). The nodal points of the net-work also 

 were found a little thickened here and there. The only thing 

 which is different is that the nervous elements here are stained 

 in a color similar to that of the Golgi net, and the distinction 

 between the nervous elements and the Golgi net becomes natu- 

 rally difficult. 



In both the above-mentioned preparations I observed indis- 

 putably the direct transition of neurites into the Golgi net beams, 

 as is shown very clearly in figures 5, 6, and 11, although I do 

 not mean by that at all that the Golgi net is o'f nervous nature. 

 To this question of the nature of the Golgi net and its relation 

 to the nerve fibers I will return later. 



As already remarked. Held (18) demonstrated the net-like 

 formation on the different kinds of the central ganglion cells, 

 after Golgi had described it for the first time. Held at first 

 identified his net-like formation with Golgi' s net-work and char- 

 acterized it as a dense net-work with coarse nodal points, formed 

 by the fusion of arborized nerve fibers in the gray matter. He 

 therefore described it as the 'pericellular nervous terminal net.' 

 Besides Held, the net-like framework of the ganglion cell was 

 also described by Semi Meyer (23, 24), Auerbach (2), and Bethe 

 (7). Auerbach described the terminal nervous net around the 

 ganglion cell on ground of his own method. Bethe, who demon- 

 strated his Golgi net with the help of his molybden technic, con- 

 cluded in harmony with Held, Semi Meyer, and Auerbach that 



