66 



ILLINOIS BIOLOGICAL MONOGRAPHS 



[66 



giving the specific regenerations 0.60, 0.39, 0.24, 0.22, 0.21, 0.20. There 

 is a graphic representation in Figiire 11. As before, the two shortest 

 removals give the highest specific rates but beyond these there is an 

 approach to constancy though there is still a slight decrease with increase 

 in removal. 



The ten day values have already been given. 



Between ten and twelve and a half days after the operation there 

 is j]o further growth in the case of the two shortest removals. In the 

 two medium removals the process is completed at twelve and a half 

 days. In the two longest removals there is still a small amount of 



mm. 

 4.0 



Figure 10 



1.5 2.8 4.9 8.4 13.1 



— > Lengths removed in mm. 

 Ram dantitans Second regenerations Eight days 



18.1 



mm. 

 0.60 

 0.50 

 0.40 

 0.30 

 0.20 

 0.10 



Figure 11 



13.1 



18.1 



1.5 2.8 4.9 8.4 



— >- Lengths removed in mm. 



Rana clamitans Second regenerations Specific lengths Eight days 



proliferation after this time. At twelve and a half days the regenerated 

 lengths are 1.0, 1.3, 1.6, 2.6, 4.4 and 6.2 mm. as shown in Table 38. The 

 increase with increase in removed length is continuous. This is shown 



