are all devices and sports for stimulating the sense of
motion. In most of these modes of motion the body is passive or
semipassive, save in such motions as skating and rotating on the feet. The
passiveness of the body precludes any important contribution of stimuli
from kinesthetic sources. The stimuli are probably furnished, as Dr. Hall
and others have suggested, by a redistribution of fluid pressure (due to
the unusual motions and positions of the body) to the inner walls of the
several vascular systems of the body."

[41] _Anatomy of Melancholy_, part iii., sect. ii, mem. ii, subs. iv.

[42] Sadger, "Haut-, Schleimhaut-, und Muskel-erotik," _Jahrbuch fuer
psychoanalytische Forschungen_, Bd. iii, 1912, p. 556.

[43] Marro (_Puberta_, p. 367 et seq.) has some observations on this
point. It was an insight into this action of dancing which led the Spanish
clergy of the eighteenth century to encourage the national enthusiasm for
dancing (as Baretti informs us) in the interests of morality.

[44] It is scarcely necessary to remark that a primitive dance, even when
associated with courtship, is not necessarily a sexual pantomime; as
Wallaschek, in his comprehensive survey of primitive dances, observes, it
is more usually an animal pantomime, but nonetheless connected with the
sexual instinct, separation of the sexes, also, being no proof to the
contrary. (Wallaschek, _Primitive Music_, pp. 211-13.) Grosse (_Anfaenge
der Kunst_, English translation, p. 228) has pointed out that the best
dancer would be the best fighter and hunter, and that sexual selection and
natural selection would thus work in harmony.

[45] Fere, "Le plaisir de la vue du Mouvement," _Comptes-rendus de la
Societe de Biologie_, November 2, 1901; also _Travail et Plaisir_, ch.
xxix.

[46] Groos repeatedly emphasizes the significance of this fact (_Spiele
der Menschen_, pp. 81-9, 460 et seq.); Grosse (_Anfaenge der Kunst_, p.
215) had previously made some remarks on this point.

[47] M. Kulischer, "Die Geschlechtliche Zuchtwahl bei den Menschen in der
Urzeit," _Zeitschrift fuer Ethnologie_, 1876, p. 140 _et seq._

[48] Sir W.R. Gowers, _Epilepsy_, 2d ed., 1901, pp. 61, 138.

[49] Guyon, _Lecons Cliniques sur les Maladies des Voies Urinaires_, 3d
ed., 1896, vol. ii, p. 397.

[50] See, e.g., Fere, _L'Instinct Sexuel_, pp. 222-23: Brantome was
probably the first writer in modern times who referred to this phenomenon.
MacGillicuddy (_Functional Disor