. The development of the chick; an introduction to embryology. Birds -- Embryology. LATER DEVELOPMENT OF VASCULAR SYSTEM 365 a second venous ring is established around the aUmentary canal, the lower portion of which is formed b}^ the second anastomosis, j/it. a Oes. Mr ; :^. ^:i/.s. \ ^. J).C. y^.^^'rSO 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, Holt

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Keywords: ., bookauthorlilliefrankrattray187, bookcentury1900, bookdecade1900