The Journal of experimental zoology . were apposed and turned dorsally so that neither of them touchedthe substratum. The new tissue was not much used by the speci-men for attachment to the substratum, the most posterior partsof the lateral margins being employed instead. This functionalsubstitution of the lateral margin for the posterior end is in itselfinteresting and determines certain other important features. Theparts of the lateral margins which formed the actual posterior endof the piece reacted to contact with the substratum in much thesame manner as the posterior end in normal animals
The Journal of experimental zoology . were apposed and turned dorsally so that neither of them touchedthe substratum. The new tissue was not much used by the speci-men for attachment to the substratum, the most posterior partsof the lateral margins being employed instead. This functionalsubstitution of the lateral margin for the posterior end is in itselfinteresting and determines certain other important features. Theparts of the lateral margins which formed the actual posterior endof the piece reacted to contact with the substratum in much thesame manner as the posterior end in normal animals. If one ofthe regenerated tails happened to be in contact with the sub-stratum it often adhered to some extent. While the other tail 272 C. M. Child, applied itself to the dorsal surface of the first (Fig. 28). But themargins of the body bent across the posterior end adhered so muchmore closely that the regenerating tails were not subjected to thecharacteristic tension. Even when one or both of the* posteriorends underwent temporary
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Keywords: ., bookauthorwi, bookcentury1900, bookdecade1900, booksubjectzoology
