. Outlines of zoology. Zoology. Fig. 275.—Stages in development of chick.—After Marshall. 1. Segmentation, superficial view of blastoderm. 2. Vertical section of blastoderm. -£/5., Epiblast; lower layer of cells ; , sub-germinal cavity ; y., 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 Thomson, J. Arthur (John Arthur), 1861-1933. Edinburgh, Glasgow and London, H. Frowde and Hodder & Stoughton

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Keywords: ., bookauthorth, bookcentury1800, bookdecade1890, booksubjectzoology