A dissertation on the structure of the obstetric forceps, [electronic resource] : pointing out its defects, and especially of those with double curved blades: at the same time, shewing particularly the safe application of those with single curved blades, as geometrically proportioned and constructed: and likewise, Shewing the Necessity and good Effects of several new Forms of the Single Curved Blade, as the narrow, fanged and reflected, in certain cases of retarded labors: together with Cautions, Remarks, and Reflections on the Conduct and Management of Labors in general. By R. Rawlins, Surgeon, Oxford.