The principles and practice of obstetrics . the increased mortality of male infantsis due to their greater size and weight, and consequently to the greater pressure uponthe head, he attempts to show that this circumstance is not alone sufficient to accountfor the difference in mortality. He agrees with Casper, that the longer life-durationof the female sex has a deeper relation to this question; and he remarks that thedifference in development between the sexes is too inconsiderable to exercise somarked an influence on the life of the child. In 2550 children, he found the differ-ence of weight
The principles and practice of obstetrics . the increased mortality of male infantsis due to their greater size and weight, and consequently to the greater pressure uponthe head, he attempts to show that this circumstance is not alone sufficient to accountfor the difference in mortality. He agrees with Casper, that the longer life-durationof the female sex has a deeper relation to this question; and he remarks that thedifference in development between the sexes is too inconsiderable to exercise somarked an influence on the life of the child. In 2550 children, he found the differ-ence of weight between boys and girls, whether first-born or otherwise, to be of a civil pound, while the difference in the circumference of the head was butsix lines. Dr. Clarke on the contrary fixed the difference of measurement at Dr. Yeit says that, even when the development is the same, more boys thangirls are always still-bort. In his analysis of the proportion of deaths in the male THE PRINCIPLES AND PRACTICE OF OBSTETRICS. 29. Fio. IT. the time of labor ; and I need not state that the only circumstancesunder which the last re-gion or base is foundthere, will be when, eitherthrough an operation per-formed by the accoucheur,or through brutal manage-ment, the head has beenseparated from the legion, which pre-sents the most commonlyat the superior strait, isthe vertex; and, whendiscussing the relativefrequency of presenta-tions, your attention shallbe particularly drawn to this interesting fact. Diameters.—The diameters of the foetal head, which have a directbearing on its exit through the pelvis, are four in number: 1. Theoccipito-mental (Fig. IV), some-times called the oblique, becausein position it is oblique to the axisof the body, is the longest diame-ter of the head, and measuresfive inches and a quarter; itextends from the central portionor prominence of the occiput tothe chin; 2. The occipitofrontaldiameter, known as the direct,measures four inches
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Keywords: ., bookcentury1800, bookdecade1860, bookpubli, booksubjectobstetrics
