39 



cellular capsules. In the ganglia so far studied, there is a pre- 

 ponderance of bipolar nerve-cells, but, in a few cases, other ganglion 

 cells have been observed with angular outlines, and three (or more) 



A 





'■ ;■" ;'^' "/ . ■"; -M^M ■■'■■ ' Pi' •; -■ v 



^'i. c/. 



^/j. c/; 



^n. c/. 



H'ÄI^ /v 



.gn c/.'- 





gn. cl. 



V^*tp 



■tÄi:m^\^^-:^^\ "B 





I 



Fig 2. Sections of the ganglia of Squalus (A) and Trygon (B), V oc. 2, obi. V, in 

 gn.cl bipolar ganglion cells, gn.ce' supposed multipolar cells. 



processes, suggesting the presence of a limited number of multipolar 

 cells. In Squalus, these ganglion cells have been observed in develop- 

 mental stages as well as in adults. In the younger stages, however, 

 only bipolar cells have been seen. 



