All this serves to show that the quality of the odor is not a matter of indifference to the excitation of sexual voluptas. The disagreeable smell from any part of the body of one mate will act as an inhibition upon the libido of the other. The sense of sight, if offended, works much the same way. Ugliness will, therefore, act as a check not only upon the voluptas, but also upon the libido. Pain or cold have also inhibitory effects. Hence defloration, accompanied by more or less pain, checks the libido of the woman. Hatred has a great inhibitory influence upon voluptas and libido. In men, it is self-evident that where there is no voluptas there is no erection and consequently no congress or libido. But even in women where sexual conjugation is possible against her will, libido can seldom be compelled. She may be debauched, physically, and even ejaculation may take place, for when fully excited, the muscular contractions become independent of the will, but the excitation can not induce full libido.[R] Virtually, a woman can rarely be violated. If in a case of rape the woman experiences complete orgasm, then she consented physiologically, though she may have morally struggled against the impropriety of the act. _Spatium concarnationis._—Spatium temporis concubitus, to a certain extent, depends upon the will. The man and the woman are able to delay the orgasm for a certain time. It is in the individual’s power, if it be not neurasthenic or tabetic, to induce the orgasm earlier or later. But this power is limited. It is not altogether voluntary to induce orgasm or prevent it. The duration varies in different animals as well as in different individuals. In some animals a single stimulant suffices to induce orgasm; other animals remain in conjugio for hours or even days. If the duration of the ant-orgastic stage is too short in the female, analogous to the ejaculation ante portas in the male, the deficiency must be corrected. Though the precipitate orgasm in the female has not the same importance as in the male, because her orgasm does not of necessity terminate congressum as in the male. Yet it may, sometimes, have a damaging effect upon the potency of procreation. For the ideal intercourse, in the interest of procreation, is the one in which the female ejaculation occurs immediately after the male emission or simultaneously with the same. Besides, the longer duration creates greater intensity of libido, which is desirable for the well-being of both mates. For this reason Ovid advises in his “Ars Amandi”: “Crede mihi, non est veneris properanda voluptas, “Sed sensim tarda prolicienda mora.” _The post-orgastic stage._—Soon after the orgasm the libido ceases, and a state of languor ensues. “Cum pariter victi faemina virque jacent.”