RATE OF REGEXERATIOX — ZELENY 



mm. 

 7.0 



6.0 



J 2.0 



Figure 19 



ness 



1.5 2.8 4.9 8.4 13.2 



— >- Lengths removed iu mm. 

 Rana dainitans Second regenerations Completeness 



17.9 



1.5 2.8 



13.2 



4.9 8.4 



• — > Lengths removed in mm. 

 RiDUi dainitans Second regenerations Specific lengths 



17.9 



Complete- 



a large proportion of the total mass of the regenerated organ. Since 

 apparentlj' the lengtli of this mass of cells is very much alike at all 

 levels as indicated by the facts of the four day regenerations, the speeitic 

 lengths for these short removals are greater than for the others. The 

 high values of the two longest removals are due to a continuation of 



