Dunn, Nerve Fibers of the Frog. 



317 



Table XIV, for the shank, shows also a greater number of 

 muscular than of cutaneous fibers. The absolute numbers are, 

 for the left side, 1205 muscular, 903 cutaneous fibers, for the 

 right side, 1127 muscular, 1003 cutaneous fibers. There are 

 at present no data for comparison with this enumeration for the 

 shank. 



TABLE XIV. 



Showing the number of muscular and of cutaneous fibers innervat- 

 ing the shank. 



*Articular. 



5. Comparison of the number of nerve fibers for the two sides. 



Even the most casual examination of the tabulations al- 

 ready presented reveals a striking accordance between the num- 

 ber of fibers for the two sides. This confirms the previous 

 observation. There appears however to be a slightly greater 

 variation for the branches to the shank. This irregularity may 

 be a matter of individual variation, or, if it be found present in 

 other specimens, may be one of several irregularities of inner- 

 vation which the shank seems to exhibit. 



No interpretation of the uniformity in the number of fibers 

 for the two sides seems called for. The fact of symmetry in 

 the number of fibers is what might naturally be expected from 

 the corresponding uniformity for the two sides of the mass of 

 tissue innervated and from their physiological similarity. 



