. The mammary apparatus of the mammalia : in the light of ontogenesis and phylogenesis . Mammals; Mammary glands. 60 MAMMARY APPARATUS OF THE MAMMALIA and 20), and, with the disappearance of the membrana reuniens inferior, approach each other in a medioventral direction. But while in the Echidna they remain passive until the formation of the mammary hairs and glands, in the Marsupialia the differentiating / ./ Fig. 20.—Embryo of Perameles. (After Hill.) already started in the Didelphys embryo, go steadily forwards, so that even before birth the primary-primordia have entirely disap
. The mammary apparatus of the mammalia : in the light of ontogenesis and phylogenesis . Mammals; Mammary glands. 60 MAMMARY APPARATUS OF THE MAMMALIA and 20), and, with the disappearance of the membrana reuniens inferior, approach each other in a medioventral direction. But while in the Echidna they remain passive until the formation of the mammary hairs and glands, in the Marsupialia the differentiating / ./ Fig. 20.—Embryo of Perameles. (After Hill.) already started in the Didelphys embryo, go steadily forwards, so that even before birth the primary-primordia have entirely disappeared as such, and their place is taken by a number of small separate epidermal thickenings, which constitute the primordia of the individual nipples. These at first appear in the form of. 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
