New York: Wood & Holbrook, 1870. Stated ninth edition; the first appeared in 1866. 8vo, original green cloth, gilt lettering, 304,  pages. Illus. Somewhat bumped, rubbed and a bit soiled, with some light spotting to the spine; a small adhesive label neatly removed from the front free endpaper, the adhesive still a bit tacky; a good, sound copy. Item #18455
"Women's equality in all the relations of life implies her absolute supremacy in the sexual relation." An important American work of popular physiology and sex education from the hydropathic Trall. Per the Atwater catalog, "Sexual Physiology has the longest publishing history among Trall's many books. Its several editions were issued at least seventeen times in the United States between 1866 and 1901." With the printer's slug on the copyright page, "D. H. Prime, Printer, Hygienic Institute, New York." Wood had taken over Trall's hydropathic Hygienic Institute after Trall moved his operations to New Jersey in 1867. Includes ads in the rear for Wood & Holbrook's Turkish Baths on Laight Street in New York. See Atwater 3585 for the first edition of 312, 4,  pages; Atwater includes several later editions, all seemingly later than this styled ninth edition.