100 C. WINKLER. THE CENTRAL COURSE 



nucleus touching the portio interim. Therefore this part of the 

 dorsal nucleus is found slightly atrophied, not only by loss of fibres 

 (collaterals) but also by loss of cells. Cells in the nucleus of 

 BECHTEREW, in the nucleus griseus radicis descendentis, in the ven- 

 tral apex of the dorsal nucleus also have disappeared. 



But only smaller cells, the larger cells are not altered. Here the 

 same results reappear as were demonstrated in the nuclei of the 

 ventral system a year after rootsection. 



There these results were: No alteration in the large cells of 

 the tuberculum acusticum ; loss or atrophy of small cells in the 

 deep grey matter. No alteration in the dorso-proximal pole of the 

 ventral nucleus. Loss or atrophy of cells in the proper nucleus 

 of the dorsal root of the smaller cells in the ventro-distal pole of 

 this nucleus. 



No alteration in the cells of the facial nucleus or in the larger 

 cells of the olivary bodies. Loss or atrophy of cells in the small 

 cells in their medullary surroundings and in the opposite nucleus 

 trapezoides. 



Here the results are: No alteration in the largest cells of DEITERS, 

 or in cells of the large and middle-large size in the nucleus of 

 BECHTEREW, the nucleus griseus -)- apex ventralis nuclei dorsalis, 

 and in the cells of the abducent Nerve. 



Loss or atrophy of cells in the proper nucleus of the medial 

 trunk, in the ventral borders of the lateral and principal cell-groups 

 of the nucleus dorsalis, and among the smaller cells of the nucleus 

 of BECHTEREW, nucleus griseus -|- apex ventralis nuclei dorsalis. 



Here as before I conclude, that the contact between root-fibres 

 and cells, from which secundary systems originate is not a direct one. 

 Small cells are intercalated. Here the cells of the medial trunk 

 of rootfibres, the cells of the dorsal nucleus bordering the portio 

 interna, a certain part of the cells in the nucleus BECHTEREW 

 and in the nucleus of the descending roots. 



And it is only through those intercalated cells, that the cells, in 

 which originate the secondary systems - - here the large elements 

 in the nuclei of DEITERS, of BECHTEREW, in the nucleus griseus 

 of the descending root and in the nucleus N. VI are reached 

 by the root-fibres. 



These results, following inevitably, as well from MARCHi-method, 

 as by GUDDEN'S method, are not in contradiction with GOLGI- 

 preparations. 



