39 

 are comparatively small in sif.e, and are referable to type II 

 of Golgi. The external morpholot^y of a neuror.e is shown in 

 Pi£.4. 



The shape of the cell -body ran^'es frou^ almost triangular 

 to broadly oval. The axone may emerge directly from the cell- 

 body, or it may spring from one of the larger dendrites. It 

 pursues an irregular course away from the limitans interna 

 into the deeper levels of nervous matter. Before proceeding 

 far, it breaks up into a widely-spread arborization such as is 

 characteristic for neurones of this type. I believe from the 

 course of the axones that they constitute a means for trans- 

 mitting impressions to the viscero-motor nucleus; see Subsec- 

 tion F5. 



The dendrites are three or four in number. They are quite 

 stout near their origin, they taper gradually, and they do not 

 become very fine at their terminations. Their morphology is 

 simple, since there sre only one or two branchings at most. 

 Their lengths may be as great as that of the axone, and so the 

 dendrites from all of the neurones here interlace to form a 

 veritable Jungle. The surface of a dendrite bears a few gem- 

 mules, together with certain small knobs and elevations of 

 various shapes. 



The internal organization of a neurone from the right 

 lobus vagi is shown in Pig. 4^. The nucleus is always large in 

 proportion to the bulk of the cell. In some instances there 

 is only a thin film of cytO[.lasn enclosing it at certain points. 



