OF DEXISON UNIVERSITY. 4« 



arber aiich eine gewisse Zahl fieiner sich veraestelnder Fortsaetze in 

 eim nervoeses Netz abgeben, dass nach (iolgi Nervenfasern und 

 Nervenzellen verbindet. In dieses Nets treten auszer den el)en 

 genannten feiner Aiislaeufern, noch ein (i) feine veraestelte Auslaeu- 

 fer der motorischen Nervenfaesern, welche von d<^n Axencvlijider- 

 fortsaetzeH der motorischen Zellen entspringen, (2) Fortsaetze der 

 centripetal erragbaren (sensiblen) Nervengellen, die Golgi als nervoese 

 bezeichnet, arber in ein feines Netz sich aufloesen laeszt, (3) endlich 

 veraestelte feine Auslaeufer der centripetal wirkenden (sensiblen) 

 dunkel-randigen Fasern. Mir will es nun, trotz aller Anerkennung 

 der wichtigen errungenschaften Golgi's, vorkommen, alsob dieexistenz 

 eines solchen verwikelten nervoesen Netzes nicht hinreichend sicher 

 begriiendet sei " 



The question as to the anastamoses between different fv^-'jion 

 cells has been laboriously argued. Some few, like Glaus, Vi.-li.ines, 

 Wagner and, more recently, Nansen have denied the existence of such 

 connections. Nansen says : 



" I have on several occasions firmly denied a common existence 

 of direct combinations between cells, not having found any case of 

 indubitable anastomosis between cell j)rocesses." *'The 'neuroglia 

 cells ' and fibres, which are interposed between the ganglion cells, have 

 certainly assisted a great many writers to see anastomoses, as they have 

 not understood the real nature of this supi)orting tissue." 



The author admits what we have very fre(iuently seen i><.\ >nd 

 doubt, that lateral communication certainly exists as a result of cell 

 division, but seems to believe that there is a subsetjuent solution of 

 continuity. He says -/^ 



" When one has examined so many i)rei)arations (stained by the 

 most perfect methods) as I have, without finding one anastomosis of 

 indubitable nature, I think one must be entitled to say, that direct 

 anastomosis between the i)rocesses of the ganglion cells does not exist, 

 as a rule. What previous writers have suiJjiosed to be anastomoses 

 is, in my opinion, probably the neuroglia reticulation generally extend- 

 ing between ganglion cells. * - ^ A neither objection against a 

 direct combination, and which does not seem to have been thought of 

 by a great many authors, is the existence of unipolar cells." 



[The structure and combinalion of the Ilistolojjical Element^ "*■ •'>»• ^>n- 

 tral Nervous System, p. 8 6.] 



