J. F. GASKELL 



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Fig. 1 . Diagram of a ganglion of the leech showing the compartments in which 

 the nerve cells are grouped and the position of the chromaffin cells in them. The 

 limits of the various cell groups are shown, with regard to the ventral side of the 

 ganglion on the right and center, with regard to the dorsal side on the left. G., 

 the two giant cells lying in the ventral anterior group. L., the lateral cells lying 

 in the dorsal portion of the posterior lateral groups. V.A., the ventral anterior 

 group. V.P., the ventral posterior group. L.A., the lateral anterior group. 

 L.P., the lateral posterior group. C, the connectives. A., the anterior nerves. 

 P., the posterior nerves. 



