- NLM Digital Collections - Gynoplastic technology : with a chapter on "Sacral anesthesia"Publication: Philadelphia : F.A. Davis Company, 1923... of mercuric chloride, zinc sulphate, iodo- form, arsenic, belladonna and phenol poisoning are recorded as the result ... levator hernise internally, r, Rectococ- cygeus; c, coccygeus; l, levator ani, and o, oblique fascia. (Chase.) Any of these varieties in the course of their prog- ress may ...