160 



ILLIXOIS BIOLOGICAL MONOGRAPHS 



[160 



TABLE 104 (Continued) 



12%, 56 and 56 days respectively. The regenerated lengths at these times 

 of completion are respectively 67, 46, 33, 31, 40 and 39 per cent of the 

 removed lengths. As in the case of the first regenerations the two shortest 

 removals give the highest per cent of regeneration and the two medium 

 removals the lowest per cent. 



Experiment V Amblystoma punctatum Series 6212-6281 



The experiments on tadpoles of Rana clamitans having shown that 

 only a half or less of the removed length on the average is completed dur- 

 ing regeneration it became a matter of interest to see if this might not 

 have been due to the age of the tadpoles, which were obtained in the fall. 

 Accordingly a series of Amblystoma larvae was operated upon within a 



