. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGS. 17-20. as if finely striped in the longitudinal direction. This change in shape of the chromatophores is actually a stretching, not a migra- tion, for it is possible to select some particular spot which happens to be conspicuous for some reason and to observe its change of shape from day to day : in such cases it can be seen clearly that merely elongation not migration occurs. A similar elongation is visible in the parenchyme cells in sec- tion. Stevens ('07) has recently described this elongation or orientation of the
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGS. 17-20. as if finely striped in the longitudinal direction. This change in shape of the chromatophores is actually a stretching, not a migra- tion, for it is possible to select some particular spot which happens to be conspicuous for some reason and to observe its change of shape from day to day : in such cases it can be seen clearly that merely elongation not migration occurs. A similar elongation is visible in the parenchyme cells in sec- tion. Stevens ('07) has recently described this elongation or orientation of the parenchyme cells and regards it as indicating migration, but Steinmann ('08) does not agree with her. As a matter of fact the specimens in which the change of shape is inhibited by anaesthetics show nothing of the sort even in regions adjoining those where new tissue is being formed, but if such pieces be returned to water the cells of the parenchyme become very distinctly elongated or oriented in the direction in which elongation of the body is occurring, even though no new tissue is being formed at the time. In short the change in shape or. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
