These acute results are at the present day very often due to premature ejaculation by nervous or neurasthenic husbands, the rapidity with which detumescence is reached in the husband allowing insufficient time for tumescence in the wife, who consequently fails to reach the orgasm. This has of late been frequently pointed out. Thus Kafemann (_Sexual-Probleme_, March, 1910, p. 194 et seq.) emphasizes the prevalence of sexual incompetence in men. Ferenczi, of Budapest (_Zentralblatt für Psychoanalyse_, 1910, ht. 1 and 2, p. 75), believes that the combination of neurasthenic husbands with resultantly nervous wives is extraordinarily common; even putting aside the neurasthenic, he considers it may be said that the whole male sex in relation to women suffer from precocious ejaculation. He adds that it is often difficult to say whether the lack of harmony may not be due to retarded orgasm in the woman. He regards the influence of masturbation in early life as tending to quicken orgasm in man, while when practised by the other sex it tends to slow orgasm, and thus increases the disharmony. He holds, however, that the chief cause lies in the education of women with its emphasis on sexual repression; this works too well and the result is that when the external impediments to the sexual impulse are removed the impulse has become incapable of normal action. Porosz (_British Medical Journal_, April 1, 1911) has brought forward cases of serious nervous trouble in women which have been dispersed when the sexual weakness and premature ejaculation of the husband have been cured. The true nature of the passivity of the female is revealed by the ease with which it is thrown off, more especially when the male refuses to accept his cue. Or, if we prefer to accept the analogy of a game, we may say that in the play of courtship the first move belongs to the male, but that, if he fails to play, it is then the female's turn to play. Among many birds the males at mating time fall into a state of sexual frenzy, but not the females. "I cannot call to mind a single case," states an authority on birds (H.E. Howard, _Zoölogist_, 1902, p. 146), "where I have seen anything approaching frenzy in the female of any species while mating." Another great authority on birds, a very patient and skillful observer, Mr. Edmund Selous, remarks, however, in describing the courting habits of the ruffs and reeves (_Machetes pugnax_) that, notwithstanding the passivity of the females beforehand, their movements during and after coitus show that they derive at least as much pleasure as the males. (E. Selous, "Selection in Birds," _Zoölogist_, Feb. and May, 1907.)