CONTINUED SELECTION IN HYDRA 



21 



TABLE 1. 



Relationships and initial numbers of tentacles of all selected Hydras in the lines 

 which survived throughout the experiment. The successive figures from left to 

 right represent the numbers of tentacles of the parents in successive generations. 

 The braces show where two or more offspring of a single parent were retained. 

 The number of tentacles of the final generation from, ivhich the unselected buds 

 were obtained is given at the extreme right. 



(-i~(-i~i 



6-7- 

 5-7- 



l 

 f6-7-7-7- 



/6-7. 



-'-'-'-' \ 6-8. 

 -6-7 



f6..., 



^7 7.. 

 -7-7. 



'17. 



-7-7-7-7-7 []■ 



6-7- 



6-7 

 6-7 



16.. 



6-7-7-7-7-7 < ^' 

 I 7-7 . . 



6-7-7-7-7-7- 



f6-7-7 7 



I 7-7-7 8 



^7-7-7 8 



fi [7 7 



^ \7-7 7 



[7-7 7 



{7 7 



1 7 



5-6-5-4-6-6-6-6-6. 



7-5-5-5-5-6-4-6-6-6-6-6-6-5-6-5 5 



/ 5-6-4-6-6-6-6- 6 



\ 6-6-6-6-6-6-6-6-6 6 



]■ 6-6-6-6-6-6-6-6-6 6 



\ 6-6-6-6-6-6-6-5 6 



[5-6-6-5-6-6-6-6-5-5-5-6 6 



QKcecccccc/ 6-6-6-6-6 6 



8-6-5-6-6-6-6-5-6-6^ g_g_g_g_g ^ 



6-5-6-6-6-5-6-6-6-5-6-6 ^'"''^^l^ ^ , ^ , ' 



[ .. J 5-0-6-5-6-6-6-6 6 



\ 6-6-6-6-6 6 



f6-6-5-5-6 



6-5-6-6-6-5-6-6-6-6 \ f5-6-6-6 6 



[6-6-6 -16-6-6-6 6 



[6-6-6 6 



f6-6-6 6 



[6-6-6 6 



I 6-5-5-6-5-4-4-6-6-6-6-6-6-6-6 6 



I [4-6-6-5-6-5 6 



6-6-6-4-6-6 \ 5-6-6-6-5-5-6-6-5-6 [5-6-6-6-6-6-6-6 



[6-6-6-5-6-5 ; 6 



(.5-6-6 -i f , „ f6-6-6 6 



r 16-6-6 6 



[5-6-6-5-3-5 5 



6-5-5-5-6-6-5-5-4-5-5-6-6-6=; 

 7-6-6-6-5-6 



6-5-6-5-6-5-5-4-6-6-5-5-6-6 



6-6-6-5-5 



