. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Fig-. A represents an embryo of Reniera, B an embryo of Sertnlaria, and C an embryo of Echinus. sphere, densely packed with a compact cell-mass. If it were possible in the comparison to take only such data into considera- tion, we should say (as Hackel actually has done with regard to the planulge of the Sponges and Hydroida) that all the three embryos are perfectly homologous, and especially that all three have originated in a similar manner. It is only the close ex- aminatio
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Fig-. A represents an embryo of Reniera, B an embryo of Sertnlaria, and C an embryo of Echinus. sphere, densely packed with a compact cell-mass. If it were possible in the comparison to take only such data into considera- tion, we should say (as Hackel actually has done with regard to the planulge of the Sponges and Hydroida) that all the three embryos are perfectly homologous, and especially that all three have originated in a similar manner. It is only the close ex- amination of subsequent stages that shows us that the homo-. 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 London, Taylor and Francis, Ltd
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Keywords: ., bookce, booksubjectbotany, booksubjectgeology, booksubjectzoology
