1911] Nervous System of Corydalis 225 



In those entering from below some run straight in and end 

 in the caudal region of the central fibrous mass, while in many 

 .specimens fibers from the outer side of the connectives sweep 

 sharply in towards the center of the lower part of the ganglion 

 to end near the middle line, either on the same side or just 

 over it. (c) Fibers from above. In general there are similar 

 bundles of fibers to those traced from below: (1) Those end- 

 ing in the lower part of the ganglion on the same side. (2) Those 

 ending on the same side but in the cephalic portion of the 

 ganglion. (3) Those crossing to end in the lower part. (4) 

 Those crossing to end in the upper part. 



In the case of fibers ending in the ganglion from the ceph- 

 alic direction, none were seen forming such a dense sweep into 

 each center from the sides of the connectives, although there 

 were a few fine ones of this sort. Most of the fibers leave the 

 "punktsubstanz" to run in the connectives without great devia- 

 tion from a straight course, (d) Fibers passing into the con- 

 nectives from cells within the ganglion. There may be dis- 

 tinguished in many of the preparations cells with their fibers 

 well stained, the more central of these may be more clearly 

 seen in some cases. Some of the larger more central cells seem 

 to be merely for association within the ganglion, with all of 

 their processes ending within it. Others send one main pro- 

 cess up one connective and another down into one of the other 

 great masses of fibers. Other cells of medium or small size, 

 located chiefly at the sides of the ganglion send one long process 

 into one of the nerve trunks while the other shorter process 

 may run for a short distance in the connective trunk or be lost 

 in the central mass of the ganglion. 



THE FIBERS OF NERVE TRUNKS. 



These have already been spoken of to some degree. Most 

 fibers of both cephalic and ventral nerves seem to enter the 

 central part of the ganglion and are lost track of in the "Punkt- 

 substanz," but both the lateral and ventral trunk-fibers are 

 continued into the connectives in the cephalic direction at 

 least, and possibly to some extent in the caudal, although this 

 was not determined. In the case of the lateral trunks of all 

 the abdominal ganglia, there is a possible sensory tract enter- 

 ing the cephalic edge of the nerve center without coming to the 

 central "punktsubstanz" or having any communication with 



