Herrick, Gustatory Paths in Fishes. 



427 



impregnated indicates the positions of these two chief centers 

 of secondary connection for gustatory root fibers. 



Fig. JO. Transverse section through the vagal lobes of Aineiurus iiebiilosus. 

 GoLGi method. X6o. 



On the left side is shown a gustatory neurone of the dorsal secondary group 

 {s.g.n.), whose neurite enters the secondary gustatory tract {s.g.t.). The prepar- 

 ation shows one of the intrinsic neurones of the vagal lobe (?'«.), also several cells 

 of the nucleus ambiguus. On the right side are seen some of the simpler termin- 

 tions of the communis root of the vagus. 



The dorsal portion of the superficial roots of the vagus and 

 glossopharyngeus is the most important member of the com- 

 plex. Its fibers arborize intimately intertwined with the thick 

 thorny dendrites of the dorsal secondary neurones (Figs. 30, 

 31, 32). These are very highly differentiated cells whose neu- 

 rites arise from the cell body and constitute the secondary gus- 

 tatory tract, or central gustatory path. Their dendrites are 



