THE CERVICAL SYMPATHETIC TRUNK Bll 
Huber’s three papers. It seems that the pyridine silver method 
usually does not stain these pericellular networks; only occasion- 
ally have we seen fragmentary impregnations of them. This is 
in keeping with the fact that the method does not readily yield 
pictures of nerve endings. 
In addition to the pericellular endings thus described there are, 
we believe, synapses between preganglionic fibers and the den- 
drites of the cells in the superior cervical ganglion. This is true 
14 
Figs. 13 and 14 Preganglionic fibers and pericellular plexuses of the frog. 
Redrawn from Huber (’99). The preparations were stained with methylene blue. 
13, preganglionic fibers, the branches of which form pericellular plexuses; 14, a 
sympathetic ganglion cell, unipolar, in connection with which a preganglionic 
fiber is terminating. 
of the subcapsular dendrites in man as well as of the long extra- 
capsular dendrites of man and the dog and cat. As was first 
shown by Cajal in the superior cervical ganglion of man, the 
subeapsular dendrites forming glomeruli and dendritic crowns 
are in close relation to fine, darkly staining fibers, which run 
among them in every direction. This is illustrated in figure 5 
and 6. These fibers have the same appearance, caliber, and 
