6o4 'Journal of Comparative Neurology and Psychology. 



Fig. 30. Peripheral ganglion cells, a, b, c, a group of three in the base of one of the gills, d, a 

 cell from the tip of the tongue, on the cephalic surface of the anterior tongue cartilage. Magnification 

 of a, h, c, 200 diameters; of d, 350 diameters. 



