THERAPEUTIC VALUE OP LOCALIZED FARADIZATION. 171 



from these anatomical facts, that the spinal ganglia, without doubt, 

 contain tripolar cells, of which two poles are continued respectively 



*':i%^^ 



r^^^^^^l^^ 



fJw 



Kig. -!•). — Cells photographed and heliographod to 200 diameters, at the point c of the spinal 

 ganglion photographed to 21 diameters in Fig. 43.^ 



in a central and a peripheral direction, like those of the cells c and 

 c in fig. 43, and the third, in a lateral direction. 



If we suppose that, in endeavouring to isolate a tripolar cell, its 

 central pole had been broken in preparation, we should have the 

 appearance of a cell the two poles of which had a peripheral 

 direction, as in the bipolar cells described by Kolliker. 



In conclusion, it has been shown that the cells of the spinal 

 ganglia communicate anatomically, in part at least, with the 

 spinal cord ; and that we should not consider these ganglia as 

 the centres of the trophic nervous filaments. Are they, possibly, 

 organs of re-inforcement for the trophic nerves of the skin ? 



From these data many clinical facts receive their explanation. 

 Thus, inflammation of certain portions of the cord is not only 

 followed by ati-ophy, with granular or granulo-fatty degeneration 

 of muscles, and by atrophy of bone, but also by a slight lesion of 

 nutrition of the skin, which becomes more or less wrinkled, scaly, 

 and earthy, and, lastly, by decrease of temperature, with hyper- 

 plasia of the subcutaneous cellular tissue, in the locality of the 

 wasted muscles. I have observed this assemblage of phenomena 

 hundreds of times in the spinal paralysis of infancy ; the anatomical 

 cause of which, as shown by several autopsies, is situated in the 



® a, apolar cell ; 6, &', two small imipolar 

 cells ; c, c', two large bipolar cells. The 

 cell c, cut through the middle, displays 



its granular contents and nucleus, which 

 are hidden in the cell c' hv its reticular 



