A theoretical and practical treatise on midwifery : including the diseases of pregnancy and parturition and the attentions required by the child from birth to the period of weaning . he Clinique cVaccouchement deParis, a drawing of which has beenprepared by M. P. Dubois. Aplacenta presenting the sameanomaly, was recently exhibited byme to the Biological Society. Thisspecimen derived additional interestfrom the fact, that it was the productof a double pregnancy, the other ovumhaving a distinct and regularly formedplacenta. A much more singular case hasbeen obligingly communicated to me by Dr. B
A theoretical and practical treatise on midwifery : including the diseases of pregnancy and parturition and the attentions required by the child from birth to the period of weaning . he Clinique cVaccouchement deParis, a drawing of which has beenprepared by M. P. Dubois. Aplacenta presenting the sameanomaly, was recently exhibited byme to the Biological Society. Thisspecimen derived additional interestfrom the fact, that it was the productof a double pregnancy, the other ovumhaving a distinct and regularly formedplacenta. A much more singular case hasbeen obligingly communicated to me by Dr. Blot. In this instance, the placentalmass presented nearly the usual appearance, but around it were distributed severalentirely distinct cotyledons, which were connected with it only by the vesselsproceeding from them to join the ramifications of the cord. (Fig- 52.) The after-birth presents a foetal, or internal, and an external, or uterine sur-face; also a circumference, or border. The internal surface is covered both bythe chorion and amnion, and exhibits numerous ramifications of the umbilicalarteries and vein, which generally converge about the centre of this body to form. Placenta, with five separate , b. Amnion, c. The Cord. d. Separatecotyledons. MODIFICATIONS OF THE HUMAN OVUM. 207 the umbilici cord. The uterine surface is much less smooth, polished, anduniform than the preceding, and is slightly convex, whilst the former is a littleconcave. It is subdivided into a variable number of lobes, or irregularly-roundedcotyledons, held together by a soft, lamellated, albuminous tissue, which is soeasily lacerated, tbat a rupture may occur during the separation of the plac*enta, Fig. 53. Fig. 54.
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Keywords: ., boo, bookcentury1800, booksubjectmidwifery, booksubjectobstetrics
