. On the theory and practice of midwifery . uteri, is that position in which the physicalshape of the normal and fully-developed foetus is best adapted to thephysical shape of the normal and fully-developed cavity of the This adaptive position of the contained body to the containing cavityis the aggregate result of reflex or excito-motory movements on the partof the fcetus, by which it keeps its cutaneous surface withdrawn as far aspossible from the causes of irritation that may act upon it as excitants, or*hat happen to restrain its freedom of position or of motion. UTERO-GESTATION.
. On the theory and practice of midwifery . uteri, is that position in which the physicalshape of the normal and fully-developed foetus is best adapted to thephysical shape of the normal and fully-developed cavity of the This adaptive position of the contained body to the containing cavityis the aggregate result of reflex or excito-motory movements on the partof the fcetus, by which it keeps its cutaneous surface withdrawn as far aspossible from the causes of irritation that may act upon it as excitants, or*hat happen to restrain its freedom of position or of motion. UTERO-GESTATION. 139 193. The length of a full-grown foetus is from 18 to 22 or 24 longitudinal diameter of its head (12) is from 4 to 4|The transverse . . . 3| to 4 The occipito-mental or oblique (3 4) . 5 The cervico-bregmatic (5 6) . . 4 to 4| The trachelo-bregmatic . . 3i to 4 The inter-auricular .... The fronto-mental (78) The transverse diameter of the shoulders The transverse diameter of the hips Fig. 68. 43 4¥ 3 to 5^to 5. In general, it maybe observed that all the measurements are less in femalethan in male children.* The weight of a full-grown child at birth varies in the same and in dif-ferent sexes. Rcederer found the weight in Germany, to be from sevento eight pounds. Dr. Jno. Clarke, in the Lying-in Hospital, Dublin, as-certained the weight of the majority, to be about seven pounds, but thatit varied from four to eleven pounds. In France, the average weight isless; according to Camus, it is six pounds and a quarter, and observationsat La Maternite have confirmed this estimate. In Brussels, it is six poundsand a half; but in Moscow, nine pounds and one fifteenth. Dr. Beckstates that the average weight in America exceeds seven 194. The umbilicus changes its relative position as the development ofthe fcetus proceeds, until at birth, it is near the middle of the entire length * Dr. Meigs (Obstetrics; the Science and the Art, p. 63) makes the occipito-frontaldiame
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