1. Observations on the combination of acids, bitters, and astringents: being a refutation of some of the principles, contained in Dr. Percival's essay, on bitters and astringents Author(s): Woodhouse, James, 1770-1809 Publication: Philadelphia : Printed by Jones, Hoff & Derrick, no. 8, North Fifth-Street, MDCCXCIII [1793] Subject(s): AstringentsAcidsPercival, Thomas, 1740-1804.