THE AXIAL GRADIENTS IN HYDROZOA. 



381 



TABLE V. 



RECORDS OF THE TIME OF EMERGENCE OF INDIVIDUAL APICAL AND BASAL HALVES 



OF THE SAME STEM. 



Dagger calls attention to cases where the basal half emerged first; other abbre- 

 viations and symbols as before. 



Total number of regenerated pairs . . . 

 Number of cases where a preceded . . . 

 Number of cases where b preceded . . . 

 Number of cases where a and b equal 



. 122 

 in or 91% 



10 or 8% 



i 



