In 1831, Ryan published part of a course of lectures on
medical jurisprudence under the title
Lectures on Population, Marriage, and Divorce as Questions of State Medicine, comprising an Account of the Causes and Treatment of Impotence and Sterility. These lectures were delivered at the medical theatre
Hatton Garden. In the same year appeared the completed form of his
Manual of Medical Jurisprudence, being an Analysis of a Course of Lectures on Forensic Medicine. A second and enlarged edition was issued in 1836, an edition with notes by R. E. Griffith, M.D., having been published in Philadelphia in 1832. In 1831 also appeared the third edition, of Ryan's
Manual of Midwifery … comprising a new Nomenclature of Obstetric Medicine, with a concise Account of the Symptoms and Treatment of the most important Diseases of Women and Children. An enlarged edition was issued in 1841, rewritten, and containing 120 figures. The
Atlas of Obstetricity had been issued separately in 1840. An American edition of the
Manual appeared at Burlington, Vermont, in 1835. His later publications included
The Philosophy of Marriage in its Social, Moral, and Physical Relations; with an Account of the Diseases of the Genito-Urinary Organs and the Physiology of Generation in the Vegetable and Animal Kingdom, 1837; this formed part of a course of obstetric lectures delivered at the North London School of Medicine. Twelve editions in all, the last in 1867, were issued. It was followed in 1839 by
Prostitution in London, with a Comparative View of that of Paris and New York … with an Account of the Nature and Treatment of the various Diseases. Ryan also published
The Medico-Chirurgical Pharmacopœia, 1837, 2nd ed. 1839; and
Thomas Denman's ''Obstetrician's Vade-Mecum, edited and augmented
, 1836. He translated and added to Le Nouveau Formulaire pratique des Hôpitaux'' by
Henri Milne-Edwards and Pierre Vavasseur. ==Notes==