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ILLINOIS BIOLOGICAL MONOGRAPHS 



[78 



They are shown in Table 41 and in Figiire 22. There is in general an 

 increase with increase in removed lengtli but the first is not proportional 

 to the second. The specific lengths are 0.30, 0.18, 0.22, 0.13, 0.12 and 

 0.09 as shown in Table 41 and Figure 23. The shorter removals still have 

 proportionately the greater regenerations. 



■g mm. 



rt 2.0 



1.5 2.6 4.6 S.2 i; 



— > Lengths removed in mm. 

 Figure 22 Rana claiiiitans. First regenerations 



Si.x days 



0.30 

 0.20 

 0.10 



•5 Figure 23 



1.5 2.6 4,6 8.2 



— >- Lengths removed in mm. 

 Rana damitans First regenerations 



Specific lengths Six days 



The maximum rate of regeneration is reached between the sixth 

 and the eighth day. The regenerated lengths at eight days are 0.8, 0.7, 

 1.5, 1.7, 2.6 and 3.0 mm. The data are shown in Table 41 and Figure 24. 

 With one exception there is increase in regenerated length with increase 

 in removed length. The specific regenerated lengths are 0.53, 0.27, 0.33, 

 0.21, 0.20 and 0.18 as shown in Table 41 and Figure 25. The shortest 

 removals have the greatest specific regenerations but at 8.2 mm. and 

 above there is an approach to constancy. 



