. The science and art of midwifery. om the skull Barnes* has suggested the application of Braxtonllickss wire ecraseur to successive portions of the transforateur is designed to bore through thesphenoid, and thus to destroy the resistance of the sphenotribes of Valette, Huter, and the Loliines, are acombination of the cephalotribe and the the principle of cephalotomy is mechani-cally correct, the operation has never met with any generalacceptance, partly owing to the high price and compli-cated structure of most of the instruments re
. The science and art of midwifery. om the skull Barnes* has suggested the application of Braxtonllickss wire ecraseur to successive portions of the transforateur is designed to bore through thesphenoid, and thus to destroy the resistance of the sphenotribes of Valette, Huter, and the Loliines, are acombination of the cephalotribe and the the principle of cephalotomy is mechani-cally correct, the operation has never met with any generalacceptance, partly owing to the high price and compli-cated structure of most of the instruments required for itsperformance, and perhaps in part to the fact that, in thehigher degrees of pelvic deformity where their advantagesover the more familiar methods would be theoreticallymo>t complete, the bulky nature of the forceps-saws andthe sphenotribes interferes with their employment. The favorable reports madeby their inventors, of the results they have personally obtained, render, however,a reference to the subject Fig. 204.—Segment re-moved by the Tar-nier forceps-saw.(P. Thomas.) * Tarnier, Diet, de Medecine ct de Chirurgie., art. Embrvotomie, t. xii, p. Taylor, What is the Best Treatment in Contracted Pelves ? Trans, of the New York Acad, of Med., 1875. \ Tarnier, Diet, de Medecine et de Chirurgie, art. Embryotomie, p. 680. * Barnes, Obstetric Operations, p. 411. 420 OBSTETRIC SURGERY. Embryotomy. In a literal sense, embryotomy includes all the graver operationsdesigned to diminish the volume and resistance of the foetus. Customhas, however, restricted the term to those operations only which areperformed upon the trunk of the child. It is used, therefore, as arule, in contradistinction to craniotomy, and not in its generic sense. Indications for Embryotomy.—1. In extreme degrees of pelvic con-traction, where the size of the body obstructs delivery.* 2. In fetalmalformations, with abdominal enlargement due to pathological con-ditions of the more im
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