PLATE 1 



EXPLANATION OF FIGURES 



All figures are of ganglion cells of the rabbit stained by the Nissl method. 

 The drawings were made with the aid of the camera lucida. Magnification for all 

 figures, 625 diameters. 



9 Sensory cell from the Gasserian ganglion. 



10 Sensory cells from the dorsal-root ganglion of a spinal nerve. 



11 to 13 Motor cells from the ventral horn of the spinal cord. 



14 to 17 Cells from ganglia in the thoracic region of the sympathetic trunk. 

 Figures 14 and 16 show the characteristic peripheral arrangement of Xissl bodies 

 seen in the majority of sympathetic cells. Figure 17 represents a cell more heavily 

 stained than the others. As the figures show, many of the sympathetic cells are 

 binucleate. 



18 Cell from the superior mesenteric ganglion. 



19 Cell from the coeliac ganglion. 



20 Cell from the otic ganglion. 



21 Cell from the ciliarj' ganglion. 



22 Cell from the sphenopalatine ganglion. 



The cells of the autonomic cranial ganglia are uninucleate, but show the per- 

 ipheral arrangement of the Nissl bodies with a clear perinuclear area. 



280 



