Hardesty, spinal Ganglion Cells. 



33 



Table II. Allow^ing a comparison of the number of cells found in the spi- 

 nal ganglia (col. B), the number of fibers in the dorsal roots (col. I) and of the 

 number of fibers found in the trunks and dorsal branches (col. H) of the Vth, 

 Vlth and IXth spinal nerves of each specimen. The different specimens are en- 

 tered in the order of their body weight. In columns C, D and G the sums of 

 the ganglion cells, the sums of the dorsal root fibers and the sums of the fibers 

 in the trunks and dorsal branches found in the three nerves of each frog may be 

 compared with each other and, reading downward, the sums in each column 

 may be compared with reference to the increase in body weight. Column E, 

 obtained by dividing col. C by col. D, presents the ratios of ganglion cells to 

 dorsal root fibers in the three nerves combined of each specimen and likewise 

 col. F shows the number of cells in the combined ganglia per each fiber in the 

 total of the trunks and dorsal branches less the ventral root fibers of each speci- 

 men. 



