In her study of eighteenth-century literature and medical treatises, Mary McAlpin takes up the widespread belief among cultural philosophers of the French Enlightenment that society was gravely endangered by the effects of hyper-civilization. McAlpin's study explores a strong thread in this rhetoric of decline: the belief that premature puberty in young urban girls, supposedly brought on by their exposure to lascivious images, titillating novels, and lewd conversations, was the source of an increasing moral and physical degeneration. In how-to hygiene books intended for parents, the medical...