. The elements of Embryology. Embryology. 408 DEVELOPMENT OF OKGANS IN MAMMALIA. [CHAP. The ductus Botalli of the fifth arch (known in Man as the ductus arteriosus) of the side on which the pulmonary arteries are formed, may remain { in Man) as a solid cord connecting the common stem of the pulmonary aorta with the systemic aorta. The diagram, Fig. 137, copied from Rathke, shews at a glance the character of the metamorphosis the arterial arches undergo in Birds and Mammals. Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced

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. The elements of Embryology. Embryology. 408 DEVELOPMENT OF OKGANS IN MAMMALIA. [CHAP. The ductus Botalli of the fifth arch (known in Man as the ductus arteriosus) of the side on which the pulmonary arteries are formed, may remain { in Man) as a solid cord connecting the common stem of the pulmonary aorta with the systemic aorta. The diagram, Fig. 137, copied from Rathke, shews at a glance the character of the metamorphosis the arterial arches undergo in Birds and Mammals. 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. London, MacMillan

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Keywords: ., bookautho, bookcentury1800, bookdecade1880, booksubjectembryology