. The mammary apparatus of the mammalia : in the light of ontogenesis and phylogenesis . Mammals; Mammary glands. DEVELOPMENT IN ECHIDNA 17 that in the region of the navel at the sides of the body a pair of epidermal thickenings was present (Fig. 6a, ma). Each of these extended over a space of perhaps forty sections, and. Fig. 6b.—^Echidna: Semon's Embryo. Series of Transverse Sections through the Primary- Primordia shown in Figs. 5 and 6a. represented altogether a strip three times as long as broad (Fig. 6b). The cutis also under- lying these thickenings was specially differen- tiated, owing
. The mammary apparatus of the mammalia : in the light of ontogenesis and phylogenesis . Mammals; Mammary glands. DEVELOPMENT IN ECHIDNA 17 that in the region of the navel at the sides of the body a pair of epidermal thickenings was present (Fig. 6a, ma). Each of these extended over a space of perhaps forty sections, and. Fig. 6b.—^Echidna: Semon's Embryo. Series of Transverse Sections through the Primary- Primordia shown in Figs. 5 and 6a. represented altogether a strip three times as long as broad (Fig. 6b). The cutis also under- lying these thickenings was specially differen- tiated, owing to an accumulation of nuclei and 2. 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
