DeWitt, Netves in the (Esophagus. 385 



was made only in surface preparations, where it is possible to 

 mistake a fiber passing over or under a vessel for one ending 

 upon it, I am unwilling to make this statement positively until 

 after further investigation. 



Besides the neurones which have just been described and 

 which may be regarded as motor sympathetic neurones both on 

 account of their resemblance to the cells described as motor 

 neurones in other sympathetic ganglia by Dogiel (10-12), Huber 

 (20-21) and others, and from the fact that their neuraxes have 

 been traced to their terminations on non-striated muscle cells, 

 we find other cells in the ganglia of the oesophageal intermus- 

 cular plexus. These are usually spindle-shaped, with round or 

 oval nucleus and granular protoplasm ; from each extremity ex- 

 tends a single slender process, difficult to differentiate into neur- 

 axis and dendrite and both forming parts of nerve trunks. 

 The cells may be multipolar, with one neuraxis and several long 

 slender dendritic processes, many of which extend into the 

 nerve trunks leading from the ganglion. These cells stain more 

 readily in methylene blue than do the motor cells ; they are 

 often situated near the periphery of the ganglion and are some- 

 times found embedded in a nerve trunk at some distance from 

 any ganglion. While the processes of these cells enter the 

 nerve trunks and may often be traced for some distance in them, 

 I have never been able to trace them to their termination. 

 They, however, correspond exactly to the cells described by 

 Dogiel (12) as type II or sensory cells and found by him in 

 both the central and peripheral sympathetic ganglia. Accord- 

 ing to Dogiel, the single neuraxis of one of these cells passes 

 in the nerve trunk, either as a non-medullated fiber or sur- 

 rounded by a thin medullary sheath, to some other ganglion in 

 which it forms an intercellular network. It often sends collat- 

 eral branches to several ganglia, before finally terminating as 

 described about the motor sympathetic cells. Huber (20), hav- 

 ing seen sympathetic fibers terminating on the dendrites of 

 sympathetic cells, suggests the possibility that this is the man- 

 ner of termination of the neuraxes of the sensory sympathetic 

 neurones. Other neuraxes of sensory sympathetic neurones, 



