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THESE Waters are of infinite Service to the Infant, during the time of Maturation: As they are to both Mother and Child in the time of BIRTH; which hereafter will more amply appear. And as in Conception, these Membranes are form’d before the EMBRYO; being, as they are commonly call’d, the Coats of the Egg: So, in time of Labour, they always present themselves, with their peculiar Waters, to the ORIFICE, before the Infant approaches.
IN Case of TWINS or more Children; each has its proper Membranes and Waters apart, in which they are separately wrap’d up.
CHAP. XII. Of the SECUNDINE, or AFTER-BIRTH.
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THE SECUNDINE is a thick carnous Mass, of a soft vasculous Substance, compos’d of the maternal Menstrua; which waxes upon the outside of the Chorion in proportion with the Growth of the Foetus; encreasing (as the Waters do) together with the Infant. It is also called the Womb-Cake, or Placenta Uterina; but most commonly the Woman’s AFTER-BIRTH.
IT is call’d Placenta, because of its flat circular Figure, resembling a pretty thick round Cake; being about eight Inches Diameter, and one Thick; a little thicker in the Middle, where the Umbilical Vessels are fixed, than at the Edges.