3.0 4.0 S.0 6.0 7.0 8.0 9.0 10.0 1 1.0 12.0 



Cephalo-lhoracic length during period in which regeneration takes place 



13.0 



14.0 



Table iib. Comparison of first and second regenerations in all the individuals, arranged according to cephalo-thoracic length. X First 

 generation; * superposition of two cases of first regeneration; O second regeneration; superposition of a first and a seci 



regeneration. 



re- 

 second 



