AFFERENT PATHS OF SYMPATHETIC SYSTEM 495 
where they form terminal arborizations about some spinal gan- 
glion cells, chiefly those of Dogiel’s type Il. The visceral im- 
pulses conveyed by these neurones are collected from spinal 
ganglion cells, the centripetally directed processes of which trans- 
mit them through the spinal cord upwards. Besides this long 
path, Dogiel assumes a shorter one which conveys those afferent 
visceral impulses which never rise into consciousness at all, but 
expend themselves in the production of peripheral reflexes; 
the centripetal fibers of many sensory autonomic cells are believed 
to end within sympathetic ganglia in connection with the den- 
drites of efferent cells. It will be here noticed that Dogiel’s 
view does not necessarily deny the presence of afferent cerebro- 
spinal fibers in the viscera. 
It is not my purpose to cite all the discussions about the two 
foregoing views, discussions which we meet in every modern 
book about the sympathetic system, nor to recall the modifica- 
tions of Dogiel’s theory, which deserve more than a passing 
notice. The aim of my paper is merely to call attention to a 
definite anatomical finding which, in my opinion, gives a very 
valuable confirmation of the first view, but could not be used to 
disprove entirely the second. 
The theory which assumes that the nerve cells from which 
arise the afferent paths of the sympathetic system lie in the spinal 
ganglia is based on physiological experimentation and on the 
following anatomical facts. 
A. Morphological researches of Kolliker and Ramon y Cajal. 
These investigators have found some large nerve fibers coming 
off from the spinal ganglion and entering the ramus communi- 
cans. Kodélliker assumed that these fibers formed the sensory 
sympathetic paths. Upon reading all of the literature available 
to me, I could not find that Kélliker or any other investigator 
has described the nerve cells from which arise those fibers which 
are commonly called Kélliker’s fibers. In theaccount which Redlich 
wrote about Kolliker’s lecture (4) we read: ‘‘jene freilich unklaren 
Empfindungen die wir normal von dem Zustande der vom 
Sympaticus versorgten Teile haben, leiten von der Funktion 
einer geringen Zahl dunkelrandiger Nervenfasern ab, die von 
