It is a curious proof of the ignorance which has prevailed in recent times concerning the psychic sexual nature of women that, although in earlier ages the fact that women are normally liable to erotic dreams was fully recognized, in recent times it has been denied, even by writers who have made a special study of the sexual impulse in women. Eulenburg (_Sexuale Neuropathie_, 1895, pp. 31, 79) appears to regard the appearances of sexual phenomena during sleep, in women, as the result of masturbation. Adler, in what is in many respects an extremely careful study of sexual phenomena in women (_Die Mangelhafte Geschlechtsempfindung des Weibes_, 1904, p. 130), boldly states that they do not have erotic dreams. In 1847, E. Guibout ("Des Pollutions Involontaires chez la Femme," _Union Médicale_, p. 260) presented the case of a married lady who masturbated from the age of ten, and continued the practice, even after her marriage at twenty-four, and at twenty-nine began to have erotic dreams with emissions every few nights, and later sometimes even several times a night, though they ceased to be voluptuous; he believed the case to be the first ever reported of such a condition in a woman. Yet, thousands of years ago, the Indian of Vedic days recognized erotic dreams in women as an ordinary and normal occurrence. (Löwenfeld quotes a passage to this effect from the Oupnek'hat, _Sexualleben und Nervenleiden_, 2d ed., p. 114.) Even savages recognize the occurrence of erotic dreams in women as normal, for the Papuans, for instance, believe that a young girl's first menstruation is due to intercourse with the moon in the shape of a man, the girl dreaming that a man is embracing her. (_Reports Cambridge Expedition to Torres Straits_, vol. v., p. 206.) In the seventeenth century, Rolfincius, in a well-informed study (_De Pollutione Nocturna_, a Jena Inaugural Dissertation, 1667), concluded that women experience such manifestations, and quotes Aristotle, Galen, and Fernelius, in the same sense. Sir Thomas Overbury, in his _Characters_, written in the early part of the same century, describing the ideal milkmaid, says that "her dreams are so chaste that she dare tell them," clearly implying that It was not so with most women. The notion that women are not subject to erotic dreams thus appears to be of comparatively recent origin.