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REGENERATION 



attachment. The other half of the bud, that had been left attached 

 to the anterior end of the posterior piece, had swung around, so that 

 its long axis corresponded to that of the posterior, parental piece. 

 At first a slight constriction indicated the line of union of the two, 



A B C D E F G 



FIG. 49. After Peebles. A. Grafting in Tubulaiia mesenbryanthemum, A small piece of the 

 stock taken from the region near the base, and grafted in a reversed direction on the oral end 

 of a long piece. B. Same with distal tentacles in small piece, and proximal tentacles in large 

 piece (modified from Peebles). C. Same. Formation of hydranth (original). D. Like A. 

 Both pieces produce hydranths. E. Protrusion of hydranths of last. F. Piece of oral end 

 cut off, turned around and grafted on oral end of long piece. A single hydranth produced. 

 Distal tentacle from both components. G. A short piece from distal (oral) end of long piece 

 cut off, and grafted by its proximal end to proximal end of the same long piece. 



but later this disappeared and a single hydra resulted. Whether 

 the difference in the fate of the two half-buds is connected with their 

 different polar relations to the parts of the parent, or is due to some 

 other difference in the absorbing power of the anterior and posterior 

 pieces, is not known. 



