The sexual culture of eighteenth-century Philadelphia was relatively open, particularly when compared with other North American colonial cities. This was due in part to its diverse, multi-national and multi-racial population and traditions, as well as to a steady stream of new ideas. During this period perceptions about gender, sexuality, and marriage were evolving, influenced by new scientific theories, Enlightenment thought, and republican ideology, disseminated by its changing population and the availability of printed sources. In addition, many laws changed as the colony became a state, and within the city new prisons and almshouses were built. Nevertheless, rape, as now, was seldom reported or prosecuted, and especially in the nineteenth century Black women and women considered ‘unrespectable’ were often blamed for enticing men. During the eighteenth century men and women easily moved in and out of relationships, sexual relationships outside marriage were frequently tolerated, and women had some sexual freedom. Prostitution was not confined to one section of the city; neither were the births of illegitimate children. Women could obtain abortifacients, and erotic literature was widely read. However, by the nineteenth century such behaviour was increasingly considered deviant, and Philadelphia was a much less tolerant place.