542 THE SYMPATHETIC SYSTEM OF NERVES, BY DR. S. MAYER. 



the appearance of a fibre plexus may proceed from the lines of 

 junction of the polygonal epithelial cells situated upon the 

 inner surface of the capsule. 



The sympathetic nerve cells, especially in Man, contain pig- 

 ment of yellow or reddish-brown colour, which is usually of 

 granular character, and is either distributed through the whole 

 substance of the cell, or is accumulated at one spot. The micro- 

 chemical peculiarities of this pigment have not been hitherto 

 minutely examined. 



The nucleus of the sympathetic cells is large, with a well- 

 defined outline, which is peculiarly distinct in specimens pre- 

 pared with chloride of gold, when the whole nucleus appears 

 light, in relief against the violet-coloured cell substance. By 

 some the existence of a special membrane is admitted around 

 the nucleus, a deduction that has been made from the very 

 distinct double contour line surrounding it, which appears 

 after the action of various reagents. J. Arnold contested the 



Fig. 263. 



Fig. 263. Cells with two nuclei, one from the Rabbit, the other 

 from the Frog. 



existence of a special membrane in the nucleus, and I have not 

 been more successful than he in satisfying myself from my 

 numerous observations on sympathetic nerve cells, and still less 

 on isolated nuclei, of the presence of a special membrane to the 

 nucleus. The substance of the nucleus is not homogeneous, 

 but is traversed by fine filaments which proceed from the 

 nucleolus. 



Remak long ago made a statement that has been more 

 recently corroborated by Guye, Schwalbe, and others, to the 

 effect that the greater number of the cells in the sympathetic 



