The finer Structure of the Nerve Cells of Invertebrates. 55 



9. The. presence of coarse neuroglia fibrils in the cell body, in 

 Rohde's sense, was not to be made out in these or in any other 

 preparations. 



10. In Flemming-, and sublimate-progressive-iron-haematoxylin pre- 

 parations, the fibrils of the axis-cylinder process and cell body 

 were most clearly seen. 



1 1 . Considerable variation was met with in the manner in which the 

 fibrils were arranged in the cell body. In the majority of cells, 

 a concentric arrangement of fibrils and granular rows was 

 marked. In other cells, however, the fibrils were quite winding 

 in character, and in this respect closely resembled those figured 

 by Flemming for the spinal ganglion cells of Mammals. 



12. The arrangement of the small chromophilous granules into rows 

 was found to be due to the circumstance, that the granules were 

 situated upon and between fibrils. 



13. Structures were met with in the nerve cells of Helix ^ which 

 undoubtedly correspond to the centrosomes and spheres commonly 

 found in other cells. 



