344 



Journal of Comparative Neurolos?, 



fore the figures of the first three columns are obtained by divid- 

 ing set 2 by set 5 in order to get the more comparable results 

 of the percentages of the variations in the numbers for each 

 millimeter of the distances through which the variations occur. 



TABLE III. 



Table III. — Giving the percentage values per millimeter of length by which 

 the numbers of fibers found in the nerve roots and trunk near the cells of ori- 

 gin, exceed the numbers found farther away. There are also given the figures 

 from which these values were computed. 



The entries in the table are arranged in groups and under each group is 

 given the averages of the percentage variations per millimeter of length for 

 that group. The general averages for the whole table are also given. 



The table shows, (i) that the percentages are higher for the younger ani. 

 mal ; (2) that the values are generally higher on the peripheral side of the gan- 

 glion (trunk) than on the ventral side (roots); (3) that in most cases the dorsal root 

 (even of the 6th. nerve) has higher values than the ventral root. 



