. Elementary text-book of zoology. 24 CHORD AT A. ivity of the myotome) early disappears and the ventral lement alone persists as a continuous perivisceral cavity. Fig. 306.—Diagrammatic Transverse Section through a LATER Vertebrate Embryo. (Mainly after Van Wijhe.) Nerve Cord, Meson ephric Tubules. Pronephric Duct,. Intestine. Perivisceral Coslom. Myocoele. Myotome. Fig. 307.—The Parts of the Ccelom in the Thoracic Cavity of a Mammal. Lung. (After WiEDEKSHEIM.) Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability


. Elementary text-book of zoology. 24 CHORD AT A. ivity of the myotome) early disappears and the ventral lement alone persists as a continuous perivisceral cavity. Fig. 306.—Diagrammatic Transverse Section through a LATER Vertebrate Embryo. (Mainly after Van Wijhe.) Nerve Cord, Meson ephric Tubules. Pronephric Duct,. Intestine. Perivisceral Coslom. Myocoele. Myotome. Fig. 307.—The Parts of the Ccelom in the Thoracic Cavity of a Mammal. Lung. (After WiEDEKSHEIM.) 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 Masterman, Arthur Thomas. Edinburgh, E. & S. Livingstone


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