โ Scribed by Berrill, N. J.
No coin nor oath required. For personal study only.
At various times the effects of both teinperature and differences in stem size on the development o r reorganization of Tubularia hydranths have been investigated. The rather large number of investigations that have been made concerning the factors determining scale of organization in Tubularia have concerned mainly the length of stem undergoing reorganization. The present account concerns 3 other aspects of this reorganization, the relationship between diameter of stem, as distinct from length, and nature of reorganization, a further analysis of the high temperature effect as exhibited in autotomy, and the effect of alternate exposures to low and high temperatures. Concerning the loss of hydranths at
๐ SIMILAR VOLUMES
Two questions arise in connection with the problem of polarity in Tubularia: ( I ) T h e Rind of Structure, polyp or stolon, that develops on a cut surface; and (2) the time at which the new structure appears. The former includes the idea of "polarity" in the usual sense; but, as I shall attempt to