116 



ILLINOIS BIOLOGICAL MONOGRAPHS 



[116 



Percent of 



tail 



length 



removed 



Length 



removed 



in mm. 



No. of in- 

 dividuals 



Days 



2- 5 



5- 7 



7- 9 



9-liy 4 



11%-15% 



1514-37 



TABLE 58 



Rana clamitans Series 3676-3765 First regenerations 

 Acceleration of specific rate of regeneration of the tail 



1.5 



+ 0.033* 



—0.020 



-0.027* 



—0.013 



0.000 



0.000 



10 



2.8 



+ 0.011* 



—0.007 



-0.007 



-0.014* 



0.000 



0.000 



18 



4.9 



+ 0.012* 



+0.002 



—0.014* 



—0.002 



-0.004 



0.000 



31 



8.4 



10 



+ 0.010* 



0.000 



—0.006 



-0.007* 



-0.004 



0.000 



49 



13.1 



+ 0.007* 



+ 0.004 



0.000 



-0.008* 



-0.004 



0.000 



67 



18.1 



10 



4-0.014* 



—0.006 



0.000 



—0.007 



-0.004 



—0.001 



