This same tendency, which we find in so highly developed a degree among animals and primitive human peoples, is also universal among the children of even the most civilized human races, although in a less organized and more confused way. It manifests itself as "showing-off." Sanford Bell, in his study of the emotion of love in children, finds that "showing-off" is an essential element in the love of children in what he terms the second stage (from the eighth to the twelfth year in girls and the fourteenth in boys). "It constitutes one of the chief numbers in the boy's repertory of love charms, and is not totally absent from the girl's. It is a most common sight to see the boys taxing their resources in devising means of exposing their own excellencies, and often doing the most ridiculous and extravagant things. Running, jumping, dancing, prancing, sparring, wrestling, turning handsprings, somersaults, climbing, walking fences, swinging, giving yodels and yells, whistling, imitating the movements of animals, 'taking people off,' courting danger, affecting courage are some of its common forms.... This 'showing-off' in the boy lover is the forerunner of the skilful, purposive, and elaborate means of self-exhibition in the adult male and the charming coquetry in the adult female, in their love-relations." (Sanford Bell, "The Emotion of Love Between the Sexes," American Journal Psychology, July, 1902; cf. "Showing-off and Bashfulness," Pedagogical Seminary, June, 1903.)
If, in the light of the previous discussion, we examine such facts as those here collected, we may easily trace throughout the perpetual operations of the same instinct. It is everywhere the instinctive object of the male, who is very rarely passive in the process of courtship, to assure by his activity in display, his energy or skill or beauty, both his own passion and the passion of the female. Throughout nature sexual conjugation only takes place after much expenditure of energy.[[34]] We are deceived by what we see among highly fed domesticated animals, and among the lazy classes of human society, whose sexual instincts are at once both unnaturally stimulated and unnaturally repressed, when we imagine that the instinct of detumescence is normally ever craving to be satisfied, and that throughout nature it can always be set off at a touch whenever the stimulus is applied. So far from the instinct of tumescence naturally needing to be crushed, it needs, on the contrary, in either sex to be submitted to the most elaborate and prolonged processes in order to bring about those conditions which detumescence relieves. A state of tumescence is not normally constant, and tumescence must be obtained before detumescence is possible.[[35]] The whole object of courtship, of the mutual approximation and caresses of two persons of the opposite sex, is to create the state of sexual tumescence.
It will be seen that the most usual method of attaining tumescence—a method found among the most various kinds of animals, from insects and birds to man—is some form of the dance. Among the Negritos of the Philippines dancing is described by A. B. Meyer as "jumping in a circle around a girl and stamping with the feet"; as we have seen, such a dance is, essentially, a form of courtship that is widespread among animals. "The true cake-walk," again, Stanley Hall remarks, "as seen in the South is perhaps the purest expression of this impulse to courtship antics seen in man."[[36]] Muscular movement of which the dance is the highest and most complex expression, is undoubtedly a method of auto-intoxication of the very greatest potency. All energetic movement, indeed, tends to produce active congestion. In its influence on the brain violent exercise may thus result in a state of intoxication even resembling insanity. As Lagrange remarks, the visible effects of exercise—heightened color, bright eyes, resolute air and walk—are those of slight intoxication, and a girl who has waltzed for a quarter of an hour is in the same condition as if she had drunk champagne.[[37]] Groos regards the dance as, above all, an intoxicating play of movement, possessing, like other methods of intoxication,—and even apart from its relationship to combat and love,—the charm of being able to draw us out of our everyday life and lead us into a self-created dream-world.[[38]] That the dance is not only a narcotic, but also a powerful stimulant, we may clearly realize from the experiments which show that this effect is produced even by much less complex kinds of muscular movement. This has been clearly determined, for instance, by Féré, in the course of a long and elaborate series of experiments dealing with the various influences that modify work as measured by Mosso's ergograph. This investigator found that muscular movement is the most efficacious of all stimulants in increasing muscular power.[[39]] It is easy to trace these pleasurable effects of combined narcotic and stimulant motion in everyday life and it is unnecessary to enumerate its manifestations.[[40]]
Dancing is so powerful an agent on the organism, as Sergi truly remarks (Les Emotions, p. 288), because its excitation is general, because it touches every vital organ, the higher centers no longer dominating. Primitive dancing differs very widely from that civilized kind of dancing—finding its extreme type in the ballet—in which energy is concentrated into the muscles below the knee. In the finest kinds of primitive dancing all the limbs, the whole body, take part. For instance, "the Marquisan girls," Herman Melville remarked in Typee, "dance all over, as it were; not only do their feet dance, but their arms, hands, fingers,—ay, their very eyes seem to dance in their heads. In good sooth, they so sway their floating forms, arch their necks, toss aloft their naked arms, and glide, and swim, and whirl," etc.
If we turn to a very different people, we find this characteristic of primitive dancing admirably illustrated by the missionary, Holden, in the case of Kaffir dances. "So far as I have observed," he states, "the perfection of the art or science consists in their being able to put every part of the body into motion at the same time. And as they are naked, the bystander has a good opportunity of observing the whole process, which presents a remarkably odd and grotesque appearance,—the head, the trunk, the arms, the legs, the hands, the feet, bones, muscles, sinews, skin, scalp, and hair, each and all in motion at the same time, with feathers waving, tails of monkeys and wild beasts dangling, and shields beating, accompanied with whistling, shouting, and leaping. It would appear as though the whole frame was hung on springing wires or cords. Dances are held in high repute, being the natural expression of joyous emotion, or creating it when absent. There is, perhaps, no exercise in greater accordance with the sentiments or feelings of a barbarous people, or more fully calculated to gratify their wild and ungoverned passions." (W. C. Holden, The Kaffir Race, 1866, p. 274.)
Dancing, as the highest and most complex form of muscular movement, is the most potent method of obtaining the organic excitement muscular movement yields, and thus we understand how from the earliest zoölogical ages it has been brought to the service of the sexual instinct as a mode of attaining tumescence. Among savages this use of dancing works harmoniously with the various other uses which dancing possesses in primitive times and which cause it to occupy so large and vital a part in savage life that it may possibly even affect the organism to such an extent as to mold the bones; so that some authorities have associated platycnemia with dancing. As civilization advances, the other uses of dancing fall away, but it still remains a sexual stimulant. Burton, in his Anatomy of Melancholy, brings forward a number of quotations from old authors showing that dancing is an incitement to love.[[41]]
The Catholic theologians (Debreyne, Mœchialogie, pp. 190-199) for the most part condemn dancing with much severity. In Protestant Germany, also, it is held that dance meetings and musical gatherings are frequent occasions of unchastity. Thus in the Leipzig district when a girl is asked "How did you fall?" she nearly always replies "At the dance." (Die Geschlechtlich-Sittliche Verhältnisse im Deutschen Reiche, vol. i, p. 196.) It leads quite as often, and no doubt oftener, to marriage. Rousseau defended it on this account (Nouvelle Heloïse, bk. iv, letter x); dancing is, he held, an admirable preliminary to courtship, and the best way for young people to reveal themselves to each other, in their grace and decorum, their qualities and defects, while its publicity is its safeguard. An International Congress of Dancing Masters was held at Barcelona in 1907. In connection with this Congress, Giraudet, president of the International Academy of Dancing Masters, issued an inquiry to over 3000 teachers of dancing throughout the world in order to ascertain the frequency with which dancing led to marriage. Of over one million pupils of dancing, either married or engaged to be married, it was found that in most countries more than 50 per cent. met their conjugal partners at dances. The smallest proportion was in Norway, with only 39 per cent., and the highest, Germany, with 97 per cent. Intermediate are France, 83 per cent.; America, 80 per cent.; Italy, 70 per cent.; Spain, 68 per cent.; Holland, Bulgaria, and England, 65 per cent.; Australia and Roumania, 60 per cent., etc. Of the teachers themselves 92 per cent. met their partners at dances. (Quoted from the Figaro in Beiblatt "Sexualreform" to Geschlecht und Gesellschaft, 1907, p. 175.)
In civilization, however, dancing is not only an incitement to love and a preliminary to courtship, but it is often a substitute for the normal gratification of the sexual instinct, procuring something of the pleasure and relief of gratified love. In occasional abnormal cases this may be consciously realized. Thus Sadger, who regards the joy of dancing as a manifestation of "muscular eroticism," gives the case of a married hysterical woman of 21, with genital anesthesia, but otherwise strongly developed skin eroticism, who was a passionate dancer: "I often felt as though I was giving myself to my partner in dancing," she said, "and was actually having coitus with him. I have the feeling that in me dancing takes the place of coitus."[[42]] Normally something of the same feeling is experienced by many young women, who will expend a prodigious amount of energy in dancing, thus procuring, not fatigue, but happiness and relief.[[43]] It is significant that, after sexual relations have begun, girls generally lose much of their ardor in dancing. Even our modern dances, it is worthy of note, are often of sexual origin; thus, the most typical of all, the waltz, was originally (as Schaller, quoted by Groos, states) the close of a complicated dance which "represented the romance of love, the seeking and the fleeing, the playful sulking and shunning, and finally the jubilation of the wedding."[[44]]
Not only is movement itself a source of tumescence, but even the spectacle of movement tends to produce the same effect. The pleasure of witnessing movement, as represented by its stimulating effect on the muscular system,—for states of well-being are accompanied by an increase of power,—has been found susceptible of exact measurement by Féré. He has shown that to watch a colored disk when in motion produced stronger muscular contractions, as measured by the dynamometer, than to watch the same disk when motionless. Even in the absence of color a similar influence of movement was noted, and watching a modified metronome produced a greater increase of work with the ergograph than when working to the rhythm of the metronome without watching it.[[45]] This psychological fact has been independently discovered by advertisers, who seek to impress the value of their wares on the public by the device of announcing them by moving colored lights. The pleasure given by the ballet largely depends on the same fact. Not only is dancing an excitation, but the spectacle of dancing is itself exciting, and even among savages dances have a public which becomes almost as passionately excited as the dancers themselves.[[46]] It is in virtue of this effect of dancing and similar movements that we so frequently find, both among the lower animals and savage man, that to obtain tumescence in both sexes, it is sufficient for one sex alone, usually the male, to take the active part. This point attracted the attention of Kulischer many years ago, and he showed how the dances of the men, among savages, excite the women, who watch them intently though unobtrusively, and are thus influenced in choosing their lovers. He was probably the first to insist that in man sexual selection has taken place mainly through the agency of dances, games, and festivals.[[47]]