Eulenburg also declares that coitus interruptus is already a frequent cause of sexual neurasthenia in women, and that its evil influence in this respect is becoming more and more frequently manifest. He publishes two typical cases, in which, from this cause, in the one case, functional neuropathy, and in the other, local disorder of the reproductive organs, ensued.

Freud describes an “anxiety-neurosis,” which is due to incomplete gratification of the woman during sexual intercourse. Coitus interruptus is almost invariably harmful to the man; to the woman it is harmful if the man thinks only of himself, and interrupts the coitus as soon as ejaculation is imminent, without concerning himself about the woman’s state of sexual excitement. If, on the other hand, the man waits until the woman’s sexual gratification is complete, the significance of such an interrupted coitus as far as the woman is concerned is that of normal intercourse.

Isolated authorities, as for instance Stille and Thompson, have contested the alleged evil consequences of preventive methods of sexual intercourse. “It is habitual excess,” says Fürbringer, “which does the mischief, not the unnatural character of the isolated act.” Löwenfeld, who considers the opposition of medical men to “Malthusianism” not wholly justified, and believes that the dangers to health “which occur in isolated cases” are not very serious, maintains none the less that the medical man must advise his patients not to practise coitus interruptus. The mode in which conception is prevented is not, he thinks, a matter of indifference to the woman. The use of occlusive pessaries and similar appliances does not in any way interfere with the normal development of sexual gratification and cannot, therefore, have any direct influence in the production of nervous disturbances. A forgotten occlusive pessary, however, has in many cases caused local disorder in the vagina. When the man is fully potent the use of condoms can do no harm to the woman, since the only effect of the condom (in a very excitable woman) is to render the development of the orgasm a little more difficult, but not to prevent it. Congressus interruptus itself is, according to Löwenfeld, harmful to the woman only when, owing to deficient potency in the male or to deficient excitability in the female, the interruption takes place before the occurrence of the orgasm.

Valenta declared that coitus interruptus was one of the chief causes of chronic metritis. Elischer saw perimetritis result from this practice; Gräfe enumerates, as consequences of frequently repeated coitus interruptus, chronic hyperæmia of the uterus and oöphoritis; Goodell observed elongation of the cervix uteri; Mensinga, infarction of the uterus, œdema of the portio vaginalis, ulceration of the cervix, hysterical paroxysms, convulsions, cephalalgias, cardialgias, etc. Lier reports a case in which, after three years’ continued practice of coitus interruptus, the menopause set in, with atrophy of the uterus; Ascher, in a similar case, saw chronic metritis ensue. According to Kleinwächter, coitus interruptus is harmful to the woman to an extent by no means trifling, whereas the man, in whom ejaculation occurs, suffers comparatively little. Fehling believes that when coitus interruptus is practised only a small proportion of women experience sexual excitement. Neugebauer states that among the very numerous cases of uterine carcinoma he has treated, the majority of the patients admitted having practised coitus interruptus. Pigeolot makes a similar statement.

It must, however, be admitted that a certain number of medical men absolutely deny the dangers of coitus interruptus, whilst others consider them altogether trifling. Just as the trend of modern opinion is to believe that in normal men and women the dangers of masturbation are far less serious than was formerly maintained, so also many are now found to maintain that coitus interruptus is harmful only to those with hereditary neuropathic predisposition. Still more unwilling are many to admit that other preventive methods do women any harm. Thus Wille maintains that the continued fear of pregnancy will in most instances do more injury to the feminine nervous system than all the preventive measures in the world. To the nervously weak woman a trustworthy preventive of pregnancy is therefore often necessary and most helpful.

An artificial method for the prevention of the ejaculation of semen was communicated to me by a celebrated anatomist. It is practised in Transylvania and in France. During intercourse the woman, just before the male ejaculation begins, presses forcibly with her finger on the base of the erect penis just in front of the prostate; the urethra is occluded by this digital compression, the semen regurgitates into the bladder and is subsequently evacuated with the urine.

This practice may be compared with the mechanical expulsion of the semen from the female genital passage immediately after coitus. Tairi reports that women of the poorer classes in Italy sit upright in bed immediately after intercourse, and by coughing, in conjunction with pressure on the abdomen, effect the expulsion of the semen. Morton informs us that the native women of Northern Australia, when they have had intercourse with a white man and wish to avoid impregnation, likewise deliberately effect the outflow of the semen post actum. The woman squats upright, with the legs widely separated, and by a sinuous movement of the perineum and a simultaneous powerful bearing-down pressure she expels the semen on to the ground.

Another way in which the attempt is made to avoid impregnation is by the use of vaginal injections; a fluid lethal to the spermatozoa being used for this purpose immediately after coitus. Douches of cold water, ½ to 1% solution of copper sulphate, 1% solution of alum, ¼% solution of sulphate of quinine, are the fluids most commonly employed; but all these are quite untrustworthy, for it is impossible to be sure that all the spermatozoa will be acted on and destroyed. Allbutt, who as medical secretary of the Malthusian League in London has unquestionably had a very wide experience, agrees with Haussmann in denying that the widely advocated cold water douche can be relied on for the prevention of pregnancy. The sudden driving of the blood out of the vessels of the genital passage at the very moment when they are intensely congested, which must inevitably result from a cold douche, is, moreover, likely to give rise to metritis, perimetritis and oöphoritis.

More trustworthy are the various apparatus, the aim of which is to prevent the contact of the semen with the ova by the interposition of an artificial wall. Although even as regards these we must bear in mind the observation of Lott, who found that spermatozoa were capable of passing through the intact membrane in favourable regions in as short a time as ten minutes. The commonest of all these apparatus is the article known as a condom, which envelops the penis with a membrane, variously consisting of isinglass, the lamb’s cæcum, or caoutchouc. Condoms, if made of suitable material, and if carefully used, are the most trustworthy of all preventives. Moreover, the injury caused by their use to the woman’s health is trifling, for they do no more than diminish to a degree the intensity of the stimulus, thus necessitating a somewhat longer duration of its action in order to effect the most intense orgasm, and thus to induce the natural physiological termination of the nervous excitement. In fact, though somewhat delayed, the normal reaction takes place in the reproductive organs. The evil effect of the use of the condom bears no comparison with that of coitus interruptus. There is, however, some justification for Ricord’s well-known epigram, that the condom is “a spider’s web for the prevention of danger, and a cuirass for the prevention of voluptuous pleasure.”

When the gynecologist, from well-considered reasons based on some pathological condition affecting his patient, feels justified in recommending the prevention of pregnancy, it is my opinion that the most trustworthy and least harmful measure at present available, and one preferable to all other mechanical apparatus, is a carefully selected and well-made condom.