FIG. 64. Regeneration and grafting in Hydra. A, seven-headed Hydra made 

 by splitting distal ends lengthwise ; B, a piece of Hydra regenerating 

 an entire animal ; 1-5, stages in this process ; C, part of one Hydra 

 grafted upon another. (From Morgan, A after Trembley, B after 

 Morgan, C after King.) 



