172 



LOCALIZED ELECTRIZATION. 



anterior cornua (I shall hereafter describe its anatomical characters). 

 To the above described disorders of nutrition will be added a more 

 grave altei'ation in the skin, such as herpes or eschar, when the 

 inflammation attacks not only the cord, but also the spinal ganglia, 

 organs of re-inforcement of the trophic nerves of the skin. I have 

 seen this happen a certain number of times, consecutively to frac-* 

 tures of the vertebral column, in which, at the place of injury, the 

 cord and the ganglia had been entirely destroyed, either by 

 the injury itself, or by consecutive inflammation, I do not doubt, 

 that the same lesions of nutrition Avill be found in cases of spon- 

 taneous and simultaneous inflammation of the cord and the spinal 

 ganglia, when it is no longer customary to neglect, as at present, 

 to examine the condition of these organs. Lastly, when the inflam- 

 mation is limited to the spinal ganglia, it will produce alterations of 

 nutrition limited to the skin. This is what has been observed in 

 the cases of zona published by Barensi)rung and Charcot, 



(h). It follows, from the facts and the considerations above set 

 forth, that the cerebro-spinal centre contains the nervous filaments 

 which promote local circulation, and the nutrition of the tissues, 

 Wiiat, then, should be the distinctive characters of these filaments? 

 If this question be one day answered, it Avill be only by the con- 

 currence of clinical observation with pathological anatomy. At 

 ]>resent I only attempt to call attention to it, in recording an 



anatomical fact that my icono-photo- 

 graphic researches have brought under 

 my observation. 



In all the transverse sections that 

 I have made, at different heights, 

 through the cord, the medulla, and 

 the anterior and posterior roots, I have 

 found a multitude of nervous tubes, 

 about 0*™"-0033 in diameter, scattered 

 in groups among the motor or sensory 

 tubes, of a diameter ranging from 

 O-mm-oi to 0-02 and 0-03. This ana- 

 tomical fact has been brought to light 

 by the photographs of the transverse 

 sections of the several parts. The 

 figures 45 and 46 have been drawn 

 They show a great number of these 



a y 200 



d X2\ 



Fig. 45. — Transverse section of the nerve- 

 tubts of a syrupatlietic ganglion, enlarged 

 200 diameter's at a and 6, and 400 diameters 

 at c ; and of the anterior colimm of the 

 cervical enlargement of the tord, enlarged 

 400 diameters, at d. 



from two such sections. 



^ I sent some of these photographs to scattered through all points of the 



the Arad^mie des Sriences, in 1864, and medulla, the cord, and the spinal roots, 



called attention to the number of .small and mixed with nerve tnljes of 0'"""-01, 



nervons tubes, of 0-'""'-00oo, that were 0-02. and O-Oo. 



