. Embryology. Embryology; Embryology; genealogy. Fig. 72. A late neurula and an early embryo of the salamander. Left: The neural tube is almost completely formed and a large elevation marks the brain region. The neural tube runs from right to left in the photograph. Rjgbt: An elongate embryo with the head at extreme right. This is a view of the right side of the embryo. The convex upper surface is the dorsal side. The tail outgrowth has not yet appeared. (Courtesy Professor John A. Moore, Columbia University.) PRONEPHRIC SWELLING GILL PLATE NASAL PIT PRONEPHRIC SWELLING. GILL PLATE GILL PLATE
. Embryology. Embryology; Embryology; genealogy. Fig. 72. A late neurula and an early embryo of the salamander. Left: The neural tube is almost completely formed and a large elevation marks the brain region. The neural tube runs from right to left in the photograph. Rjgbt: An elongate embryo with the head at extreme right. This is a view of the right side of the embryo. The convex upper surface is the dorsal side. The tail outgrowth has not yet appeared. (Courtesy Professor John A. Moore, Columbia University.) PRONEPHRIC SWELLING GILL PLATE NASAL PIT PRONEPHRIC SWELLING. GILL PLATE GILL PLATE NASAL PIT SUCKERS Fig. 73. Three stages in the development of the embryo of Kana sylvatica. Note the progressive development of the head region and the appearance of the nasal pits, the eye, the gill plate, and the mucous glands (suckers). The embryo changes in shape, becoming longer and more slender. The tail begins as a bud, which elongates progressively. (Courtesy Professor Arthur W. Pollister, Colum- bia University.) 130. 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 Barth, Lester G. (Lester George), 1905-1979. New York, Dryden Press
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Keywords: ., boo, bookcentury1900, booksubjectembryology, booksubjectgenealogy
