for the sake of matrimonial peace, simulation of libido and orgasm is a justifiable fraud. Even to resort to some lubricant to simulate the secretion from the Bartholinian and cervical glands is permissible. The man is easily deceived in this respect. He does not in any way feel the ejaculation of the woman. He only surmises her orgasm by her bearing during the culmination of the libido.[AY] The woman also does not feel immediately the male ejaculation, but she perceives it soon by the increase of moisture. Then the effect naturally increases the excitement, as the following case shows: A young woman of twenty-two, who has practised stuprum manu from her early childhood, confided to the author that she derived more libidinem de stupro manu quam de initu. Yet, she added, after some abstinence from regular initus, although she is fully indulging in her favorite pastime, she has a veritable sitim seminis. Patients afflicted with congenital impotence of libido are very seldom seen by the physician. They are not aware of their anomaly, and being otherwise normal and in full possession of the power of procreation, they never ask for treatment. The physician learns of such cases only by chance. It is different in acquired impotence of libido. Here the patient knows what she has lost, and the physician is often asked for advice and for a remedy. Hence the study of this anomaly is very important for the physician, although this impotence has not the same importance in women as it has in men, where it causes impotence of copulation and destroys the marriage relations of the couple. _Orgasmus retardatus._—The other grade in the impotence of libido is partial anaesthesia, in which the patient is able to experience the ant-orgastic pleasure, but cannot induce real orgasm. The intensity of the pleasurable feeling does not reach the sudden climax and does not diminish abruptly. The climax is never reached, and the ant-orgastic libido decreases gradually and slowly, it dies away. In idiopathic partial anaesthesia, where the anomaly is congenital, the patient has never experienced an orgasm, and hence is not aware of her anomaly. It is different in the acquired form of partial anaesthesia or in the so-called orgasmus retardatus. The sexual excitement of the woman suffering from orgasmus retardatus is never abated, her libido is unimpeded, but the potency of experiencing orgasm is diminished or entirely absent. The following extracts of a letter from a patient suffering from a certain degree of orgasmus retardatus well illustrates the complaints of this class of patients: