. The mammary apparatus of the mammalia : in the light of ontogenesis and phylogenesis . Mammals; Mammary glands. 78 MAMMARY APPARATUS OF THE MAMMALIA marsupium can in no way be compared with the incubatorium. The incubatorium is an unpaired single formation ; the marsupium, on the other hand, a complex. As we have seen, the genesis of the incubatorium is conditioned by the behaviour of the skin muscle, in so far as primarily a muscle-free area of the abdominal. Fig. 29.—Marsupial Pockets in Trichosurus. (Bresslau.) wall, surrounded by the sphincter incubatorii, is formed, and then becomes inv
. The mammary apparatus of the mammalia : in the light of ontogenesis and phylogenesis . Mammals; Mammary glands. 78 MAMMARY APPARATUS OF THE MAMMALIA marsupium can in no way be compared with the incubatorium. The incubatorium is an unpaired single formation ; the marsupium, on the other hand, a complex. As we have seen, the genesis of the incubatorium is conditioned by the behaviour of the skin muscle, in so far as primarily a muscle-free area of the abdominal. Fig. 29.—Marsupial Pockets in Trichosurus. (Bresslau.) wall, surrounded by the sphincter incubatorii, is formed, and then becomes invaginated by a tension from within. In the Marsupialia, on the other hand, the sphincter marsupii takes not the slightest part in the genesis of the pouch. The marsupium here arises as the result of formative processes in the epidermis? leading to the development of marsupial pockets, wholly unrepresented in 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
