The principles and practice of midwifery. [electronic resource] : In which are comprized and methodically arranged under the Four General Heads, of Generation, Gestation, Delivery, And Recovery, all the anatomical facts, Physiological Reasonings, Pathological Observations, and Practical Precepts, necessary to constitute the fullest and most complete system of midwifery. By Edward Foster, M. D. Late Teacher of Midwifery in the City of Dublin. Completed and corrected by James Sims, M.D.