Takahashi, Internodes on Nerve Fibers. 



173 



Table 3 gives the results of this sampling; the average at each 

 level being based on the fifty largest fibers which were found. 



The method used is sufficiently accurate to justify the state- 

 ment that on passing peripherally along the nerves to the leg, the 

 fibers of larger diameter become less frequent, and the average 



N.K- 

 N.X-- 



T2, 



Crurolaraal 



Fig. I. Giving the main trunks in the nerve to the right leg of the Leopard Frog, as seen from the 

 dorsal aspect. The levels of the several joints are indicated, and also the localities from which pieces of 

 the nerve were taken. These latter are indicated by interruptions, and designated by the letters used 

 in the text. Based on Fig. I, Dunn '02. Pi, n. peroneus lateralis. Ti, n. tibialis r. superficialis. 

 Pz, n. peroneus medialis. T%, n. tibialis r. profundus. 



length of the internodes diminishes correspondingly. With the 

 exception of the level S^y in which, owing possibly to the large 

 number of fibers present, the sampling is less representative than 

 at the lower levels, the internodes show a steadily diminishing 

 length as indicated in the last column of Table 3. 



The relations of the diameter and the length of the internodes 

 at the several levels are shown in Fig. 2. The levels are indicated 



