. On the theory and practice of midwifery . ply whatseemed to him a great deficiency in the various forceps in common use. While engagedin this task, the late Dr. Eberle placed in his hands the forceps of Professor saw at once, he remarks in a note to a former edition, that it possessed manyadvantages over any others that I had seen, and that with some little alterations itwould accomplish the objects I had in view. The instrument of Siebold, thus modifiedaccording to my own views, I now present to the public, after nearly twenty years oftrial, and sanctioned too by the experience of
. On the theory and practice of midwifery . ply whatseemed to him a great deficiency in the various forceps in common use. While engagedin this task, the late Dr. Eberle placed in his hands the forceps of Professor saw at once, he remarks in a note to a former edition, that it possessed manyadvantages over any others that I had seen, and that with some little alterations itwould accomplish the objects I had in view. The instrument of Siebold, thus modifiedaccording to my own views, I now present to the public, after nearly twenty years oftrial, and sanctioned too by the experience of a number of my friends. An account ofit has never before been published, but it was exhibited several years ago to the Collegeof Physicians and the Philadelphia Medical Society, and subsequently it has been re-ferred to by Professor Meigs in his Philadelphia Practice of Midwifery. The annexedengravings (Pig. 103) represent the instrument and its several parts, as made for me byWeigand and Snowden of this city, pretty accurately. Fig. « * rfthof the blade at a, one inch and ; of the fenestra, one inch; sepa-ration of the blades at the widest part when properly locked, two inches and a half(but this is increased nearly a quarter of an inch by the manner in which the bladesare ground being concave on their inner face, and convex externally: by this arrange-ment the liability of the instrument to slip off the head is lessened); length of theblades to the lock at i, nine inches; length of the handles from the joint at b, fiveinches The lock, which is exactly like that of the German instrument, is formed bya thumb-screw, c, which is fastened into the male branch at d, and is received into in the female branch at e. This mortise is countersunk, so that when the screwor pivot is screwed down completely, the blades cannot be separated. 6« 336 THE FORCEPS. •• By the kindness of Dr. Moehring, a former pupil of Siebold, I have before me the in-strument of
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