Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: " caduque uterine" and " caduque re'flechie." It exists even in extra uterine foetation, and is analogous to the concretions observed in cases of dys- menorrhoea. At first it is no other than sero- albuminous matter, semi-fluid, partly concrete, and fills the uterine cavity. At the end of six weeks, it is still a soft, pulpy substance, without any very appreciable traces of organization, ? in fact, resembling a decolorized clot of blood with membranous flakes and filaments adhering to its surface. These flakes have been considered by Osiander to be the remains of a false membrane habitually formed in the uterus around unimpregnated or abortive ova, and which belong less to the ovum than to the uterus. Dr. Lee considers that the decidua reflexa is formed from the flocculent matter thrown out into the uterus around, and under the influence of the ovum. Hence the name " ovuline decidua.," Chaussier says that at the sixth week the more fluid parts of this coagulable matter, which is generally found in its interior, or rather between the true and reflected decidua, has been absorbed by the uterus and ovum to contribute to the nourishment of the embryo. At a later period, the decidua envelops the chorion, even to the border of the placenta, to which it becomes intimatelyadherent. It does not, as Haller has supposed, double or divide itself so as to form two layers, the one passing before, the other behind the placenta, for the membrane which invests the uterine surface of the placenta is much thinner, more transparent, and much more adherent than the decidual membrane. According to Velpeau, at the moment of accouchment the decidua appears simple, of a yellowish white colour, thicker than the other membranes, of a soft pulpy consistence, and its cohesion analogous to that of membranous ...