Dr. Reich describes the analysis of a girl who had sexual relations with her brother from her sixteenth to her twentieth year. After nine months of analysis she gave them up owing to prohibitions on the part of the analyst. 'A simple genital father-relationship of the usual hysterical type covers deeper disturbances of the mother-relationship resulting from the oral attitude. The relation to the father expresses itself in hysterical anxiety and disturbances of the genital object-relations, while the oral structure leads to deep disturbance of the ego-development (Triebhaftigkeit), to a far-reaching isolation of the super-ego and to dissociation of personality'. The analysis, which lasted two years, and brought about an improvement in symptoms, did not reveal more detailed reasons for the incestuous relationship. The patient's abnormal development was largely conditioned by social factors. Dr. Reich believes it to be typical of persons who in childhood experience little love, severe prohibitions and many sexual seductions.