. The elements of embryology . Embryology. THE THIRD DAY. Fia. Transvbrsb section through the trunk of a Duck Embryo with about twenty-four mesoblastic somites. ami. amnion; so. somatopleure; sp. splanchnopleure; wd. "Wolffian duct; St. segmental tube ; cardinal vein ; ins. miiscle^ plate; spinal ganglion; spinal cord; ch. notoohord; ao. aorta; hy. hypoblast. united with the side of the spinal cord at a very con- siderable distance from its original point of origin. It is moreover attached, not by its extremity, but by its side. The above points, which are much more
. The elements of embryology . Embryology. THE THIRD DAY. Fia. Transvbrsb section through the trunk of a Duck Embryo with about twenty-four mesoblastic somites. ami. amnion; so. somatopleure; sp. splanchnopleure; wd. "Wolffian duct; St. segmental tube ; cardinal vein ; ins. miiscle^ plate; spinal ganglion; spinal cord; ch. notoohord; ao. aorta; hy. hypoblast. united with the side of the spinal cord at a very con- siderable distance from its original point of origin. It is moreover attached, not by its extremity, but by its side. The above points, which are much more easily studied in some of the lower vertebrate forms than in Birds, are illustrated by the subjoined section of an Elasmobranch embryo, Fig. 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
