REGENERATION IN TUBULARIA CROCEA. 



289 



piece, AB, before one developed on the oral end, C, of the prox- 

 imal piece, CD. This result might, of course, be expected as 

 the oral end, A, closed two hours before the end, C. In no case 

 did a polyp develop at the aboral end, D, of the proximal 

 piece as soon as one formed at the oral end, C. A start of only 

 two hours, however, is sufficient, in most cases, to cause the for- 

 mation of a hydranth at D before one develops at the aboral end, 

 B, of the distal piece, AB. 



The results obtained when the intervals between the cuttings 

 were four, six and eight hours are given in Tables II. to IV. 



TABLE II. 



TABLE III. 



TABLE IV. 



