Hardest Y, Spinal Ganglion Cells. 

 IXth NERVE Vlth NERVE Vth NERVE 



25 



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Body weight in 

 grams. 



No. of fibers in the >. 

 dorsal root. 



No. of cells in the 

 spinal ganglion. 



No. of cells per fiber — 

 in dorsal root. 



No. of cells per fiber 

 in trunk and dorsal 

 branches less the ^ 

 ventral root. 



No. fibers in trunk 

 and dorsal branches M 

 less the ventral root 



No. of fibers in the 

 ventral root. 



No. of fibers in the 

 dorsal branches. 



'Distal excess.' 



Percentage of dis- 

 tal excess. 



Sum of fibers in the 

 trunk and dorsal q 

 branches. 



Sum of fibers in dor- 

 sal and ventral roots 



Ratio of fibers in 



the ventral root to f- 



fibers in dorsal root 



