Abstract
RECENTLY the densities of the early stages in the development of the very common sea-urchin, Psammechinus miliaris (Gmelin), have been obtained by the displacement method. The figures are as follows:
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References
"Chemical Embryology" (Camb. Univ. Press), 1271.
Lowndes, A. G., Proc. Zoo. Soc. London, A, 113, 28 (1943).
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LOWNDES, A. Densities of the Embryonic Stages of Sea-Urchins. Nature 154, 55–56 (1944). https://doi.org/10.1038/154055a0
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DOI: https://doi.org/10.1038/154055a0
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