Grafting of Tiihiilaria 



335 



These results show a great difference in the region of the Hne of 

 union. The number of hydranths formed there was greatly 



TABLE 7 



reduced, the double pieces resembhng a single one in their behav- 

 ior. Pieces of the same length as A and C were cut from corre- 

 sponding regions of stems which had not been grafted. A com- 



TABLE 8 



B 



parison of their behavior with that of these pieces cut from the 

 grafted stems shows a marked difference in the number of hydranths 



