. A system of obstetrics . Fig. 37. Traction with Tarniera Porcep6. pelvis, when the traction rods aregrasped with the handle- and bothare raised in guarding the instrument has been ex-tensively used in France and Amer-ica, and, as modified by Simpson, inEngland. Its merit- have found rec-ognition in Germany, and at a recenlmeeting of the German Gynecolog-ical Society, Bumm and Sanger ex-pressed their decided preference forthis While downward trac-tion i- effected by the rods, the han-dles afford an index of the positionof the head, and should he allowedto rotate fr
. A system of obstetrics . Fig. 37. Traction with Tarniera Porcep6. pelvis, when the traction rods aregrasped with the handle- and bothare raised in guarding the instrument has been ex-tensively used in France and Amer-ica, and, as modified by Simpson, inEngland. Its merit- have found rec-ognition in Germany, and at a recenlmeeting of the German Gynecolog-ical Society, Bumm and Sanger ex-pressed their decided preference forthis While downward trac-tion i- effected by the rods, the han-dles afford an index of the positionof the head, and should he allowedto rotate freely a- the head ha- abandoned the perinealcurve, which Lusk retains. Id the cases under consideration,in which the head and hirth-canalare proportionate in -i/e. there 18 iiDelivery by Taralei t the Perineum, occasion for the U86 oi the forcepe 1 Miim/f mr met Woek . No 25, L888,. 150 THE FORCEPS. as a lever, or directly as a rotator, or as a compressor, further than insecuring a iirni grasp. The proportionate size of the head and birth-canal having been ascertained, the primary function of the forceps,traction, is all which is desired in supplementing, in a conservativemanner, the expulsive forces of the mother. The Forceps when the Head and Birth-Canal are Dis-proportionate in Size. When the Fcetus is Abnormally Large.—The explanation ofthe factors potent in determining foetal sex and development has, incommon with other obstetric hypotheses, undergone recent and Balzer have found a progressive increase in the size ofthe head after the third birth. Schroeder observed that the head of afirst-born is susceptible to much greater moulding than the heads ofchildren born subsequently. The belief that the individual more pro-nounced in type and development gives his sex to the foetus is reason-able, and awaits disproval. An extensive statist
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectobstetrics, bookyear1
