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Updated: May 20, 2025
It is well to review them as they are given in the standard text-books of comparative anatomy. Primates are eutheria, or true mammalia possessing a placental attachment of the young within the parent.
If any special substances are given off by the embryos in the uterus in ordinary gestation, the same substances would continue to be given off by the embryos in the marsupial pouch, and these must be absorbed by the skin of the pouch. In this way it seems to me we have a logical explanation of the fact that the corpora lutea in the Marsupial are not absorbed at parturition as in Eutheria.
The skin of the pouch while the embryos are in it is very soft, congested, and glandular; at the same time the embryos when transferred to the pouch at parturition are very small, immature, and have a soft delicate skin. The relation of embryos to pouch in Dasyurus, therefore, is closely similar to that of embryos to uterus after the first few days of pregnancy in the Eutheria.
This being so, must we go on for ever scraping our faces with a sharp iron, until they are blue and spotty with manifold scrapings; and cropping our hair short to give ourselves an artificial resemblance to old dogs and monkeys creatures lower than us in the scale of being and array our bodies, like mutes at a funeral, in repulsive black we, "Eutheria of the Eutheria, the noble of the noble?"
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