. The development of the chick : an introduction to embryology. Embryology; Chickens -- Embryos. '^^^:. Fig. 137. — Part of a septum of the yolk-sac. Injected. 20 days' incuba- tion. The free edge is above. (After Popoff.) Ar., Artery. St., Stomata. V. an., Longitudinal anastomoses of venous network. V., 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 Lillie, Frank Rattray, 1870-1947. New York : Henry Holt

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Keywords: ., bookauthorlilliefrankrat, bookcentury1900, booksubjectembryology