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Dissections of the pregnant uterus at three months, showing the foetus in the uterus and a section of the placenta and uterus, with the foetus attached by the umbilical cord: three figures, including an outline diagram. Copperplate engraving by J.V. Rymsdyk after himself, 1774, reprinted 1851. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.