On the part of the man, this orgasm causes the semen, which till this instant has remained in the prostate pocket, to be suddenly driven out of this place of deposit, and thrown in jets, and with spasmodic force, through the entire length of the penis, and, as it were, shot into the vaginal passage and the uterine cavity, till the whole region is literally deluged with the life-giving fluid. At the same time, the mouth of the womb opens wide; and into it pours, or rushes, this "father stuff," entirely surrounding and flooding the ovum, if it be in the womb. This is the climax of the sexual act, which is called "coitus," a word which means, going together.
With the myriads of spermatozoa swarming about it, if the vital part of the ovum comes in contact with some one of them, any one of which, brought into such contact, will fertilize it, conception results. The woman is then pregnant, and the period of gestation is begun.
This is a brief description of the act of coitus and of the means by which pregnancy takes place. It is, however, only a small part of the story of the sex relations of husbands and wives; and, be it said, a very small part of that, as will now be shown.
As has already been said, this use of the sex organs, merely to produce progeny, and so insure a continuance of the race, is a quality that mankind shares with all the rest of the animal kingdom. In all essentials, so far as the material parts of the act are concerned, the beginnings of the new life in the human family differ not a whit from that of any other mammals. In each case the ovum is produced by the ovaries of the female, passes into the womb, is there met by the semen from the male, fertilized by the spermatozoa, and so the foetus gets its start. This is the universal means by which the beginnings of all animal reproductive life takes place.
But there is another phase in the sex life of human beings, which is entirely different from that of all other animals, and which must therefore be considered beyond all that needs to be said regarding the act of coitus for reproductive purposes only. This we are now ready to consider and study.
Now in all animals, except human beings, the act of coitus is only permitted by the female, (it would seem is only possible for her) when the ovum is present in the womb and ready to be fertilized. At all other times, all female animals, except woman, are practically sexless. Their sexual organs are dormant, and nothing can arouse them to activity. Not only do they fail to show any desire for coitus, but if an attempt should be made to force it upon them, they would resist it to the utmost of their strength.
But when the ovum is present in the womb, these same female animals are beside themselves with desire for coitus. They are then spoken of as "in heat." And until they are satisfied, by meeting the male and procuring from him the vitalizing fluid which will fertilize their infertile ovum; or, failing in this, until the ovum passes away from them, out of the womb, they know no rest. At such times they will run all risks, incur all sorts of danger, do every possible thing to secure pregnancy. The thousand-and-one ways which female animals use to make known to their male mates their sexual desire and needs, when in heat, is a most interesting and wonderful story, a record made up of facts which would be well worth any student's knowing. But as all such knowledge can readily be procured from books which are within the reach of all, there is no need of noting the data here.
But now, in woman, all these things are different! As a matter of fact, the presence of the ovum in the womb of a normally made woman makes little, and, in many cases, no difference whatever as regards her status concerning the act of coitus! That is, women are never "in heat," in the same sense in which other female animals are. To be sure, in some cases, though they are rare, some women are conscious of a greater desire for coitus just after the ceasing of the menstrual flow; that is, when the ovum is in the womb. But such cases are so infrequent that they may well be counted atavistic, that is, of the nature of a tendency to return to a previous merely animal condition. For the most part, it is true of all normal women that the presence of the ovum in the womb makes little difference, one way or another, in regard to their desire for, or aversion to, the act of coitus.
Now the fact of this remarkable difference in the sex-status of women and the same quality in all other female animals leads us to a great number of interesting, not to say startling, conclusions, some of which are as follows:
In the first place, the phenomenon clearly establishes the fact that sex in the female human being differs, pronouncedly, from that of all other female life. For, whereas, among all females except woman, coitus is impossible, except at certain times and seasons, among women the act can not only be permitted, but is as much possible or desired at one time as any other, regardless of the presence or absence of the ovum in the womb. That is (and this point should be noted well by the reader) there is a possibility, on the part of the female humanity, for coitus, under conditions that do not at all obtain in any other female animal life.