100- 



FiG. no, A, B. — Dominance of developing hydranth ol Corymorpha at distal end of piece. 

 A, experimental procedure; distal section at o hr., proximal section at A" (o, 6, 12, 18, 24, 48) 

 hr.; B, graph of results; ordinates, percentages of unipolar frequency; abscissae, hours; fifty 

 pieces in each lot (from Watanabe, 1935c). 



100- 



A 



Fig. Ill, A, B. — Development of dominance by hydranth of Corymorpha at proximal end 

 of piece. A, experimental procedure; distal and proximal section at o hr., hydranth pri- 

 mordium at distal end removed at X (o, 8, 16, 24, 32, 40, 48) hr.; B, graph of results; ordinates, 

 percentages of unipolar forms; abscissae, hours; fifty pieces in each lot (from Watanabe, 

 1935c). 



