Pt. 1. History and method. Scope of the study -- The sample and its statistical analysis -- Sources of data -- Pt. 2. Types of sexual activity among females. Pre-adolescent sexual development -- Masturbation -- Nocturnal sex dreams -- Pre-marital petting -- Pre-marital coitus -- Marital coitus -- Extra-marital coitus -- Homosexual responses and contacts -- Animal contacts -- Total sexual outlet -- Pt. 3. Comparisons of female and male. Anatomy of sexual response and orgasm -- Physiology of sexual response and orgasm -- Psychologic factors in sexual response -- Neural mechanisms of sexual response -- Hormonal factors in sexual response.