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AND, in short, this being the natural Posture of the Infant in the WOMB, its preternatural Positions may from thence be easily conceived.
CHAP. XI. Of the Membranes and Waters.
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THE MEMBRANES of the Infant, are Two in number, the one exteriour, call’d CHORION; the other interiour, AMNION: which are so contiguously joined one to the other, that they appear like one and the same MEMBRANE; and, because they are only separable by Art, as a Silk-Lining from a Cloth, are sometimes call’d the double MEMBRANE.
THE Chorion is rough and unequal on the Outside, but smoother within; where it closely unites itself to the thinner and transparent Amnion.
THIS Amnion covers the Placenta, and is fixed to the Inside of the Womb, by its Circumference on all Sides.
THESE Membranes contain the Waters, in which the Infant swims; which Waters encrease along with the Infant, generating by degrees, and proceeding from the moist Humours, exhal’d (by way of Transpiration) from the tender Infant’s porous Body.