Polemon, in his Sulla Physionomia, has given among the signs of libidinous impulse: knees turned inwards, abundance of hairs on the legs, squint, bright eyes, a high and strident voice, and in women length of leg below the knee. Aristotle had mentioned among the signs of wantonness: paleness, abundance of hair on the body, thick and black hair, hairs covering the temples, and thick eyelids.
In the seventeenth century Bouchet, in his Serées (Troisième Serée), gave as the signs of virility which indicated that a man could have children: a great voice, a thick rough black beard, a large thick nose.
G. Tourdes (Art. "Aphrodisie," Dictionnaire Encyclopédique des Sciences Médicales) thus summarized the ancient beliefs on this subject: "The erotic temperament has been described as marked by a lean figure, white and well-ranged teeth, a developed hairy system, a characteristic voice, air, and expression, and even a special odor."
In approaching the question of the general physical indications of a special aptitude to the manifestation of vigorous detumescence, the most obvious preliminary would seem to be a study of the castrated. If we know the special peculiarities of those who by removal of the sexual glands at a very early age have been deprived of all ability to present the manifestations of detumescence, we shall probably be in possession of a type which is the reverse of that which we may expect in persons of a vigorously erotic temperament.
The most general characteristics of eunuchs would appear to be an unusual tendency to put on fat, a notably greater length of the legs, absence of hair in the sexual and secondary sexual regions, a less degree of pigmentation, as noted both in the castrated negro and the white man, a puerile larynx and puerile voice. In character they are usually described as gentle, conciliatory, and charitable.
There can be little doubt that castration in man tends to lead to lengthening of the legs (tibia and fibula) at puberty, from delayed ossification of the epiphyses. The hands and feet are also frequently longer and sometimes the forearms. At the same time the bones are more slender. The pelvis also is narrower. The eunuchs of Cairo are said to be easily seen in a crowd from their tall stature. (Collineau, quoting Lortet, Revue Mensuelle de l'Ecole d'Anthropologie, May, 1896.) The castrated Skoptzy show increased stature, and, it seems, large ears, with decreased chest and head (L. Pittard, Revue Scientifique, June 20, 1903.) Féré shows that in most of these respects the eunuch resembles beardless and infantile subjects. ("Les Proportions des Membres et les Caractères Sexuels," Journal de l'Anatomie et de la Physiologie, November-December, 1897.) Similar phenomena are found in animals generally. Sellheim, carefully investigating castrated horses, swine, oxen and fowls, found retardation of ossification, long and slender extremities, long, broad, but low skull, relatively smaller pelvis and small thorax. ("Zur Lehre von den Sekundären Geschlechtscharakteren," Beiträge zur Geburtshülfe und Gynäkologie, 1898, summarized in Centralblatt für Anthropologie, 1900, Heft IV.)
As regards the mental qualities and moral character of the castrated, Griffiths considers that there is an undue prejudice against eunuchs, and refers to Narses, who was not only one of the first generals of the Roman Empire, but a man of highly estimable character. (Lancet, March 30, 1895.) Matignon, who has carefully studied Chinese eunuchs, points out that they occupy positions of much responsibility, and, though regarded in many respects as social outcasts, possess very excellent and amiable moral qualities (Archives Cliniques de Bordeaux, May, 1896.) In America Everett Flood finds that epileptics and feeble-minded boys are mentally and morally benefited by castration. ("Notes on the Castration of Idiot Children," American Journal of Psychology, January, 1899.) It is often forgotten that the physical and psychic qualities associated with and largely dependent on the ability to experience the impulse of detumescence, while essential to the perfect man, involve many egoistic, aggressive and acquisitive characteristics which are of little intellectual value, and at the same time inimical to many moral virtues.
We have a further standard—positive this time rather than negative—to aid us in determining the erotic temperament: the phenomena of puberty. The efflorescence of puberty is essentially the manifestation of the ability to experience detumescence. It is therefore reasonable to suppose that the individuals in whom the special phenomena of puberty develop most markedly are those in whom detumescence is likely to be most vigorous. If such is the case we should expect to find the erotic temperament marked by developed larynx and deep voice, a considerable degree of pigmentary development in hair and skin, and a marked tendency to hairiness; while in women there should be a pronounced growth of the breasts and pelvis.[[144]]
There is yet another standard by which we may measure the individual's aptitude for detumescence: the presence of those activities which are most prominently brought into play during the process of detumescence. The individual, that is to say, who is organically most apt to manifest the physiological activities which mainly make up the process of detumescence, is most likely to be of pronounced erotic temperament.
"Erotic persons are of motor type," remark Vaschide and Vurpas, "and we may say generally that nearly all persons of motor type are erotic." The state of detumescence is one of motor and muscular energy and of great vascular activity, so that habitual energy of motor response and an active circulation may reasonably be taken to indicate an aptitude for the manifestation of detumescence.