. The mammary apparatus of the mammalia : in the light of ontogenesis and phylogenesis . Mammals; Mammary glands. 74 MAMMARY APPARATUS OF THE MAMMALIA —namely, 4*6 centimetres long—we find that the lateral margins of the three pairs of caudal rings have straightened out to form a continuous horseshoe-shaped fold bounding a slightly de- pressed area. This area represents the future pouch, and the fold its wall. The way in which. Fig. 28.—Abdominal Wall of Young Didelphys. (Bresslau.) the originally solid ingrowths are changed into folds is explained by diagrammatic sections (Fig. 25, a-f). They
. The mammary apparatus of the mammalia : in the light of ontogenesis and phylogenesis . Mammals; Mammary glands. 74 MAMMARY APPARATUS OF THE MAMMALIA —namely, 4*6 centimetres long—we find that the lateral margins of the three pairs of caudal rings have straightened out to form a continuous horseshoe-shaped fold bounding a slightly de- pressed area. This area represents the future pouch, and the fold its wall. The way in which. Fig. 28.—Abdominal Wall of Young Didelphys. (Bresslau.) the originally solid ingrowths are changed into folds is explained by diagrammatic sections (Fig. 25, a-f). They show that within the in- growths there sets in a process of cornification, as the result of which they gradually become hollowed out. Fig. 25, c, representing the stage. 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 Bresslau, E. (Ernst), 1877-; Hill, James Peter, 1873-1954. London : Methuen & Co.
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Keywords: ., bookcentury1900, bookdecade1920, booksu, booksubjectmammaryglands
