. The organism as a whole, from a physicochemical viewpoint. Biology; Mendel's law. Regeneration 169 or full completion of the formation of the oral polyp acted as an inhibition to the further flow of material to this pole. This idea was supported by an observation made independently by Godlewski and the writer that if a piece of stem be cut out of a Tubularia, and if the piece be ligatured somewhere between the two ends, the oral and the aboral polyps are formed simultaneously. This would be comprehensible on the assumption that the retarding effect which the formation of the oral has on the
. The organism as a whole, from a physicochemical viewpoint. Biology; Mendel's law. Regeneration 169 or full completion of the formation of the oral polyp acted as an inhibition to the further flow of material to this pole. This idea was supported by an observation made independently by Godlewski and the writer that if a piece of stem be cut out of a Tubularia, and if the piece be ligatured somewhere between the two ends, the oral and the aboral polyps are formed simultaneously. This would be comprehensible on the assumption that the retarding effect which the formation of the oral has on the aboral polyp was indeed of the nature of a flow of material towards the oral pole. Miss Bickford1 found that the differ- ence in time between the formation of the two polyps disappears also when the piece cut from the stem becomes so small that it is of the order of magnitude of a single polyp. In that case two incomplete polyps are formed simultaneously at each end (Fig. 23). The new head in the regeneration of Tubularia arises, as Miss Bickford observed, from the tissue near the wound. At some distance from the wound in the old tissue two rows of tentacles arise, which are noticeable as rows of longitudinal lines inside the stem before the head is formed. Driesch noticed that the newly formed head is the smaller the smaller the whole 1 Bickford, E. E., Jour. Morphol., 1894, ix., Fig. 23. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Loeb, Jacques, 1859-1924. New York, London, Putnam's Sons
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbiology, bookyear1916
