A lecture introductory to the theory and practice of midwifery : Including the history, nature, and tendency of that science; with a view of its several branches, and the proper means of attaining a perfect knowledge of the whole. Together with animadversions on the qualification and deportment of an accoucheur; publicly delivered the 4th of October, 1773. By John Leake, M.D. member of the Royal College of Physicians, London; and physician to the Westminster Lying-In Hospital.