PBEIPHEEAL-NESVB ROOTS, SPINAL GANGLIA, SPINAL CORD. 339 



one of the large ganglion-cells of the horns. A cell of the anterior horn 

 with many branches is shown in Fig. 4- and in Pig. 6, D. Not all these cells 

 are in direct relationship with the root-fibers. 



The ventral-horn cells are largely arranged in groups. The exact relationship 

 between these groups and the roots is but partly known. Naturally much knowledge 





■cryr- 



^<i 



h 



/ i\ I 



/ 



V- 









^UV 



m 



1/ > 



:/ > 



Kg. 217.^ — Sections of the cord at different levels. The letters and figures 

 indicate the spinal nerves, the- exits of which correspond to the respective sec- 

 tions. (Quain.) 



would be gained if in every case where in life there was well-defined peripheral loss 

 there should follow after death a, careful examination, specially directed toward the 

 localization of altered ganglion-cells. Hence it will be helpful to become acquainted 

 with the cell-groups in the spinal gray matter, which, being confirmed by mor- 

 phology, represent, for the present, all that is actually known. We are indebted to 

 Waldeyer for a classification of these cells, represented in Pig. 219. The well-de 



