. The elements of embryology . Embryology. III.] THE MEDULLARY CANAL. Fig. 23. 67. Dorsal View of the hardened area pelluoida op a Chick WITH Five Mesoblastio Somites. The Medullary Folds have met for part of their extent, but have not united. anterior part of the primitive streak; posterior part of the primitive streak. ikfc). It is not completely closed in till a period con- siderably later than the one we are considering. Meanwhile important changes are taking place in the axial portions of the mesoblast, which lie on each side of the notochord beneath the medullary folds. In an
. The elements of embryology . Embryology. III.] THE MEDULLARY CANAL. Fig. 23. 67. Dorsal View of the hardened area pelluoida op a Chick WITH Five Mesoblastio Somites. The Medullary Folds have met for part of their extent, but have not united. anterior part of the primitive streak; posterior part of the primitive streak. ikfc). It is not completely closed in till a period con- siderably later than the one we are considering. Meanwhile important changes are taking place in the axial portions of the mesoblast, which lie on each side of the notochord beneath the medullary folds. In an embryo of the middle period of this day, examined with transmitted light, the notochord is seen at the bottom of the medullary groove between. the medullary folds, as a transparent line shining through the floor of the groove when the embryo is viewed from, above. On either side of the notochord the body of the embryo appears somewhat opaque, 5—2. 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 Foster, M. (Michael), Sir, 1836-1907; Balfour, Francis M. (Francis Maitland), 1851-1882; Sedgwick, Adam, 1854-1913; Heape, Walter, 1855-1929. London ; New York : Macmillan
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Keywords: ., bookcentury1800, bookdecade1880, bookpubli, booksubjectembryology
