Nevertheless it is true that the whole education of girls, which so largely consists in the concealment of the essential facts of life from them; and the positive teaching so prevalent that the racial instincts are low and shameful; and also the social condition which places so many women in the position of depending on their husband's will not only for the luxuries but for the necessaries of life, have all tended to inhibit natural sex-impulses in women, and to conceal and distort what remains.
It is also true that in our northern climate women are on the whole naturally less persistently stirred than southerners; and it is further true that with the delaying of maturity, due to our ever-lengthening youth, it often happens that a woman is approaching or even past thirty years before she is awake to the existence of the profoundest calls of her nature. For many years before that, however, the unrealised influence, diffused throughout her very system, has profoundly affected her. It is also true that (partly due to the inhibiting influences of our customs, traditions and social code) women may marry before it wakes, and may remain long after marriage entirely unconscious that it surges subdued within them. For innumerable women, too, the husband's regular habits of intercourse, claiming her both when she would naturally enjoy union and when it is to some degree repugnant to her, have tended to flatten out the billowing curves of the line of her natural desire. One result, apparently little suspected, of using the woman as a passive instrument for man's need has been, in effect, to make her that and nothing more. Those men—and there are many—who complain of the lack of ardour in good wives, are often themselves entirely the cause of it. When a woman is claimed at times when she takes no natural pleasure in union, it reduces her vitality, and tends to kill her power of enjoying it when the love season returns.
It is certainly true of women as they have been made by the inhibitions of modern conditions, that most of them are only fully awake to the existence of sex after marriage. As we are human beings, the social, intellectual, spiritual side of the love-choice have tended to mask the basic physiological aspect of women's sex-life. To find a woman in whom the currents are not all so entangled that the whole is inseparable into factors, is not easy, but I have found that wives (particularly happy wives whose feelings are not complicated by the stimulus of another love) who have been separated from their husbands for some months through professional or business duties—whose husbands, for instance, are abroad—are the women from whom the best and most definitive evidence of a fundamental rhythm of feeling can be obtained. Such women, yearning daily for the tender comradeship and nearness of their husbands, find, in addition, at particular times, an accession of longing for the close physical union of the final sex-act. Many such separated wives feel this; and those I have asked to keep notes of the dates, have, with remarkable unanimity, told me that these times came specially just before and some week or so after the close of menstruation, coming, that is, about every fortnight. It is from such women that I got the first clue to the knowledge of what I call the Law of Periodicity of Recurrence of desire in women.
This law it is possible to represent graphically as a curved line; a succession of crests and hollows as in all wave-lines. Its simplest and most fundamental expression, however, is generally immensely complicated by other stimulations which may bring into it diverse series of waves, or irregular wave-crests. We have all, at some time, watched the regular ripples of the sea breaking against a sand-bank, and noticed that the influx of another current of water may send a second system of waves at right angles to the first, cutting athwart them, so that the two series of waves pass through each other.
Woman is so sensitive and responsive an instrument, and so liable in our modern civilised world to be influenced by innumerable sets of stimuli, that it is perhaps scarcely surprising that the deep, underlying waves of her primitive sex-tides have been obscured, and entangled so that their regular sequence has been masked in the choppy turmoil of her sea, and their existence has been largely unsuspected, and apparently quite unstudied.
For some years I have been making as scientific and detailed a study as possible of this extremely complex problem. Owing to the frank and scientific attitude of a number of women, and the ready and intimate confidence of many more, I have obtained a number of most interesting facts from which I think it is already possible to deduce a generalisation which is illuminating, and may be of great medical and sociological value. A detailed statement of this will be given in a scientific publication, but as it bears very intimately on the subject of the present chapter, a short and simple account of my conclusions must be given here.
It is first necessary to consider several other features of woman's life, however.
The obvious moon-month rhythm in woman, so obvious that it cannot be overlooked, has been partially studied in its relation to some of the ordinary functions of her life. Experiments have been made to show its influence on the rate of breathing, the muscular strength, the temperature, the keenness of sight, etc., and these results have even been brought together and pictured in a single curved diagram supposed to show the variability in woman's capacities at the different times in her twenty-eight-day cycle.
But it brings home to one how little original work even in this field has yet been done, that the same identical diagram is repeated from book to book, and in Marshall's Physiology it is "taken from Sellheim," in Havelock Ellis "from Von Ott," and in other books is re-copied and attributed to still other sources, but it is always the same old diagram.
This diagram is reproduced by one learned authority after another, yet nearly every point on which this curve is based appears to have been disputed.