. The cell in development and inheritance. Cells. Fig. 182. — Half-embryos of the frog (in transverse section) arising from a blastomere of the two-cell stage after killing the other blastomere. [ROUX.] A. Half-blastula (dead blastomere on the left). B. Later stage. C. Half-tadpole with one medullary fold and one mesoblast plate; regeneration of the missing (right) half in process. ar. archenteric cavity; cleavage-cavity; ch. notochord; w/./. medullary fold; meso- blast-plate. In an able series of later w^orks Whitman has followed out the sug- gestion made in his paper of 1878, cited
. The cell in development and inheritance. Cells. Fig. 182. — Half-embryos of the frog (in transverse section) arising from a blastomere of the two-cell stage after killing the other blastomere. [ROUX.] A. Half-blastula (dead blastomere on the left). B. Later stage. C. Half-tadpole with one medullary fold and one mesoblast plate; regeneration of the missing (right) half in process. ar. archenteric cavity; cleavage-cavity; ch. notochord; w/./. medullary fold; meso- blast-plate. In an able series of later w^orks Whitman has followed out the sug- gestion made in his paper of 1878, cited above, pointing out how essential a part is played in development by the cytoplasm and insist- ing that cytoplasmic preorganization must be regarded as a leading factor in the ontogeny. Whitman's interesting and suggestive views are expressed with great caution and with a full recognition of the 1 Cf. p. 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 Wilson, Edmund B. (Edmund Beecher), 1856-1939. New York Macmillan
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcells, bookyear1906
