Takahashi, Internodes on Nerve Fibers. 



^75 



number of measurements of small fibers at the upper levels to 

 make possible such a comparison. It was therefore necessary 

 to examine other specimens. 



Crurotaraal 



mm O lO 20 40 6 O 60 lOO ISO 



150 



Fig. 2. Showing the average length of the internodes at the several levels in Frog. 6. The values 

 for the diameters have been multiplied by 100, and as this frog is in the growth phase in which the 

 length of the internodes is about 100 times the diameter of the fibers, the two curves run close together. 

 The positions of the hip, knee and crurotarsal joints are also shown. 



THE LENGTH OF THE INTERNODES AT DIFFERENT LEVELS, 

 ON FIBERS OF LIKE DIAMETER. 



For the determination of the length of the internodes at different 

 levels, on fibers of Hke diameter, Frog 5, weighing 31 grams and 

 having a total length of 192 mm., was used. At each of the seven 

 levels, over 100 internodes on fibers from 5/1 to "j.^/i in diameter 

 were measured. For presentation, the fibers have been divided 

 into three classes, having an average diameter of approximately 

 5.3;/, 6.3;( and y.^^/i, respectively. The results thus condensed 

 are given in the accompanying Table 4. 



