194 Journal of Comparative Neurology. 



and dorsad and branching finely becomes lost in the network of 

 the dorsal horn of the grey substance (Fig. 3, a). 



Summary. 



In the anterior third of the spinal cord of Ctenolabrus 

 there is a series of from 35 to 40 giant cells lying in the dorsal 

 fissure, each cell within a capsule. 



At the anterior end of this series and near the posterior 

 edge of the fissura rhomboidalis there are two pairs of giant 

 cells lying bilaterally near the surface of the cord. 



The form of the cells is variable. Numerous dendrites are 

 given off which anastomose with the surrounding neuroglia 

 cells. 



The cytoplasm contains elongated chromophylic granules 

 arranged concentrically with the wall of the cell. 



Each cell gives off an axis cylinder which runs ventrad and 

 laterad usually dividing into two neurites of equal size, one of 

 which enters the lateral fiber bundle. 



This neurite follows the fiber bundle through the cord 

 either cephalad or caudad. 



The fiber bundles passing forward through the cord and 

 medulla pass out through the ventral root of the Trigeminus 

 nerve. 



The other branch apparently divides and becomes lost in 

 the network of the dorsal horn. 



Harvard University, Cambridge, U. §. A., July 25, 1S98. 



