Identifier: 67240830R.nlm.nih.gov Title: The principles and practice of obstetrics Year: 1864 (1860s) Authors: Hodge, Hugh L. (Hugh Lenox), 1796-1873 Subjects: Obstetrics Obstetric Surgical Procedures Pregnancy Publisher: Philadelphia : Blanchard and Lea

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Text Appearing Before Image: e weight of the child, at term, varies exceedingly.Much attention has been paid to this point by variousauthors; and it may be stated that the average weightof a male child, at term, is eight pounds, that of a fe-male at seven pounds. Children not unfrequently, however, weigh ten, eleven, or oven twelve pounds. ]t is very rare that this amount is exceeded. In one instance the author found the weight of a, female childto amount to thirteen pounds and a quarter. In thiscase there was not only a large development of thebody, but especially of the cranium, the transversediameter being full four inches, and the bi-temporaldiameter being very large, so that there was a greatbreadth at the forehead, as well as at other portions ofthe cranium. Wonderful accounts aregiven of chil-dren weighing fifteen or even seventeen pounds;.butsuch accounts must be received with much allowance. In cases of twins, the combined weight of the chil-dren is generally greater than that of a single child, Fig. 31.

Text Appearing After Image: Placenta of Twins. reaching sometimes to fourteen or fifteen pounds.Each twin usually weighs six or seven pounds, onechild being often more fully developed than its fellow.In cases of twins, each child has its own placenta, andits own distinct circulation; but generally these pla-centae are conjoined by their edges, forming but onemass, resembling in some degree the figure 8; the lineof demarcation is continued by the membranous parti-tion formed by the amnion and chorion of the two ova,each child having its own sac and liquor amnii. Some-times, however, the placentae are attached to different1 ltions of the uterus. In one case the author met theplacenta of one child at the edge of the os uteri, whilethe other was attached to the upper part of the uterus.ii placenta, in twins, is comparatively small, while acompound placenta is larger, longer, and heavier thanthat of a single child. The Attitude of the Fcetus.—By this expressionis to be understood the position which the fcetus occu-

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