FINER STRUCTURE OF SYNAPSE 143 



condition of the synapse was in evidence and the close relation 

 between the nerve fibers and the Golgi net-work was very clear, 

 as is shown in figure 5. In the Heidenhain preparations of 

 formol-Zenker material the synapse appears denser than in the 

 previous preparations in sections of the same thickness, but one 

 can after some practice easily find the similarity of the net -work 

 in the cell circumference and in the -axone cap.' In figure 7, 

 produced from this preparation, we observe here and there in 

 the meshes of the Golgi net around. the Mauthner cell a star- 

 shaped granule which is found oftener here than in the previous 

 preparations. It is obvious that these granules correspond to 

 Held's neurosome conglomerations, which he located in the mesh 

 of the Golgi net and interpreted as the nodal points of his 'peri- 

 cellular terminal net.' 



As was noted in previous preparations, these granules do not 

 lie exactly in the mesh of the Golgi net, so far as my observations 

 go. We cannot observe both these granules and the surrounding 

 Golgi net beams with equal distinctness in one and the same 

 focus of the microscope. By careful observation with slight 

 rotation of the micrometer screw we could ascertain here as well 

 that these granules are connected by means of their radiating 

 threads with neighboring nodal points of the Golgi net. Al- 

 though I noted also, as Held (18) did, that now and then the 

 radiating threads do not pass over the neighboring nodal points, 

 but reach the adjacent granules, passing either over or beneath 

 the net beams, this should not be wondered ^t in the three- 

 dimensional net-work. On the ground of these considerations, 

 I am inclined to assume that these granules correspond to nodal 

 points of the Golgi net, which lie in different levels and give the 

 false idea that they are within the mesh of the Golgi net. Even 

 in the thionin-eosin preparations a similar structure was recog- 

 nizable, although it is much more difficult to perceive than in the 

 previous preparations. 



Held (18) figured the mutual relation between the neurosome 

 conglomerations; but it is not indicated clearly enough in his 

 figures (7 a, b, 11, 12, 1902). His Golgi figures (3, 4) showed the 



THE JOURNAL OP COMPARATIVE NEUROLOGY, VOL, 30, NO. 1 



