FOOTNOTES: 

[98] The elements furnished by the sense of touch in sexual selection have been discussed in the first section of the previous volume of these Studies.

[99] See Appendix A.  “The Origins of the Kiss,” in the previous volume.

[100] See, e.g., Art.  “Erection,” by Retterer, in Richet’s Dictionnaire de Physiologie, vol. v.

[101] Guibaut, Traite Clinique des Maladies des Femmes, p. 242.  Adler discusses the sexual secretions in women and their significance, Die Mangelhafte Geschlechtsempfindung des Weibes, pp. 19-26.

[102] In some parts of the world this is further aided by artificial means.  Thus it is stated by Riedel (as quoted by Ploss and Bartels) that in the Gorong Archipelago the bridegroom, before the first coitus, anoints the bride’s pudenda with an ointment containing opium, musk, etc.  I have been told of an English bride who was instructed by her mother to use a candle for the same purpose.

[103] Parthenologia, pp. 302, et seq.

[104] The connection of this mucous flow with sexual emotion was discussed early in the eighteenth century by Schurig in his Gynaecologia, pp. 8-11; it is frequently passed over by more modern writers.

[105] The drawing is reproduced by Ploss and Bartels, Das Weib, vol. i, Chapter XVII; many facts bearing on the ethnography of coitus are brought together in this chapter.

[106] Onanoff (Paris Societe de Biologie, May 3, 1890) proposed the name of bulbo-cavernous reflex for the smart contraction of the ischio-and bulbo-cavernosus muscles (erector penis and accelerator urinae) produced by mechanical excitation of the glans.  This reflex is clinically elicited by placing the index-finger of the left hand on the region of the bulb while the right hand rapidly rubs the dorsal surface of the glands with the edge of a piece of paper or lightly pinches the mucous membrane; a twitching of the region of the bulb is then perceived.  This reflex is always present in healthy adult subjects and indicates the integrity of the physical mechanism of detumescence.  It has been described by Hughes. (C.H.  Hughes, “The Virile or Bulbo-cavernous Reflex,” Alienist and Neurologist, January, 1898.)

[107] Roubaud, Traite de l’Impuissance, 1855, p. 39.

[108] Das Weib, seventh edition, vol. i, p. 510.

[109] The influence of impeded respiration in exciting more or less perverted forms of sexual gratification has been discussed in a section of “Love and Pain” in the third volume of these Studies.

[110] See, e.g., the experiments of Obici on this point, Revista Sperimentale di Freniatria, 1903, pp. 689, et seq.

[111] Summarized in Archives d’Anthropologie Criminelle, March, 1903, p. 188.  The tendency to closure of the eyes noted by Roubaud, to avoid contact of the light, indicates dilatation of the pupils, for which we need not seek other explanation than the general tendency of all peripheral stimulation, according to Schiff’s law, to produce such dilatation.