. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. JOHN W. MACARTHUR. gastrular wall and more fully divided gut; and in their larger oral region and occasional belated evagination of the stomadeum. N/25O LiCl yields mostly ordinary forms, but little retarded, and only 5-10 per cent, exogastrula?. In still loxver concentra- tions development quickly approaches that of the controls. Other agents, such as KXC, CuSO,, HgCl2) HC1, CaCl2, XaCl, and conditions, such as diluted or staling water, used in appro- priate concentrations and intensities, were found to cause the same sort
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. JOHN W. MACARTHUR. gastrular wall and more fully divided gut; and in their larger oral region and occasional belated evagination of the stomadeum. N/25O LiCl yields mostly ordinary forms, but little retarded, and only 5-10 per cent, exogastrula?. In still loxver concentra- tions development quickly approaches that of the controls. Other agents, such as KXC, CuSO,, HgCl2) HC1, CaCl2, XaCl, and conditions, such as diluted or staling water, used in appro- priate concentrations and intensities, were found to cause the same sort of general inhibition of development as LiCl, stopping entogenetic changes at cleavage, blastula, or gastrula stages; all may be employed to show the relatively greater inhibitory effect on apical and ectodermal parts; many brought the blastula up to a stage (Fig. 5) precisely simulating late Lithium blastulae; and a few produced a small percentage of imperfect exogastrulae, as in Fig. 5. Arbacia pimctulata and Strongylocentrotus franciscana.—In these sea-urchins a range of types of abnormality was produced d. 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
