140 



ELEMENTS OF HISTOLOGY. [Chap. xvi. 



180. In the dorsal region of the cord there exists 

 near the grey commissure 

 a special cylindrical group 

 of large multipolar gan- 

 glion cells, which form the 

 column of Lockhart Clarke. 



In the posterior horns 

 the ganglion cells are few 

 and far between. Most of 

 them belong to the portion 

 of the posterior horn near 

 the posterior commissure. 



The substance of the 

 ganglion cells is fibrillated, 

 but there exists a granular 

 interstitial material, which 

 is especially well developed 

 near the nucleus. Some- 

 times smaller or larger 

 masses of yellowish pig- 

 ment granules are present 

 in this part of the cell 

 substance i.e., near the 

 nucleus. 



181. The fibrillated sub- 

 stance of the ganglion cells 

 is prolonged on to the pro- 

 cesses. There are always 

 one or two that are thicker 

 than the others. At a 

 Fig. 87.-An isolated Multipolar longer or shorter distance 



Ganglion Cell of the Grey Matter f ro m the cell the processes 

 of the Cord. 7 , . . f 7 . 



Tbe dondritically-branrhod process^ OfOttck dendntwally into 



W^ * large number of fibres, 

 S&SSR which eventually break up 

 into the fine network of 

 primitive fibrillre, forming the nervous groundwork of 



