In pocket-sized, coded diaries, an upper-middle-class American woman named Mary Poor recorded with small "x's" the occasions of sexual intercourse with her husband Henry over a twenty-eight-year period. Janet Farrell Brodie introduces this engaging pair early in a book that is certain to be the definitive study of family limitation in nineteenth-century America. She makes adroit use of Mary's diaries and letters to lift a curtain on the intimate life of a Victorian couple attempting to control the size of their family. Were the Poors typical? Who used reproductive control in the years between...