opposition without question, and grows accustomed to adapt herself to each of the incompatibles according to circumstances. The more thoughtful woman works out a private theory of her own. But in very many cases this mischievous opposition exerts a subtly perverting influence on the whole outlook towards Nature and life. In a few cases, also, in women of sensitive temperament, it even undermines and ruins the psychic personality. Thus Boris Sidis has recorded a case illustrating the disastrous results of inculcating on a morbidly sensitive girl the doctrine of the impurity of women. She was educated in a convent. "While there she was impressed with the belief that woman is a vessel of vice and impurity. This seemed to have been imbued in her by one of the nuns who was very holy and practiced self-mortification. With the onset of her periods, and with the observation of the same in the other girls, this doctrine of female impurity was all the stronger impressed on her sensitive mind." It lapsed, however, from conscious memory and only came to the foreground in subsequent years with the exhaustion and fatigue of prolonged office work. Then she married. Now "she has an extreme abhorrence of women. Woman, to the patient, is impurity, filth, the very incarnation of degradation and vice. The house wash must not be given to a laundry where women work. Nothing must be picked up in the street, not even the most valuable object, perchance it might have been dropped by a woman" (Boris Sidis, "Studies in Psychopathology," _Boston Medical and Surgical Journal_, April 4, 1907). That is the logical outcome of much of the traditional teaching which is given to girls. Fortunately, the healthy mind offers a natural resistance to its complete acceptation, yet it usually, in some degree, persists and exerts a mischievous influence.