ses, especially mania in
adolescent girls, that they are excessively ticklish. Again, in
ordinary routine practice I have observed that, though married
women show no ticklishness during auscultation and percussion of
the chest, this is by no means always so in young girls. Perhaps
ticklishness in virgins is Nature's self-protection against rape
and sexual advances, and the young girl instinctively wishing to
hide the armpits, breasts, and other ticklish regions, tucks
herself up to prevent these parts being touched. The married
woman, being in love with a man, does not shut up these parts, as
she reciprocates the advances that he makes; she no longer
requires ticklishness as a protection against sexual aggression."

FOOTNOTES:

[5] Alrutz's views are summarized in _Psychological Review_, Sept., 1901.

[6] _Die Spiele der Menschen_, 1899, p. 206.

[7] L. Robinson, art. "Ticklishness," Tuke's _Dictionary of Psychological
Medicine_.

[8] Stanley Hall and Allin, "Tickling and Laughter," _American Journal of
Psychology_, October, 1897.

[9] H.M. Stanley, "Remarks on Tickling and Laughter," _American Journal of
Psychology_, vol. ix, January, 1898.

[10] Simpson, "On the Attitude of the Foetus in Utero," _Obstetric
Memoirs_, 1856, vol. ii.

[11] Erasmus Darwin, _Zooenomia_, Sect. XVII, 4.

[12] Hyades and Deniker, _Mission Scientifique du Cap Horn_, vol. vii. p.
296.

[13] Such an interpretation is supported by the arguments of W. McDougall
("The Theory of Laughter," _Nature_, February 5, 1903), who contends,
without any reference to the sexual field, that one of the objects of
laughter is automatically to "disperse our attention."

[14] Even the structure of the vaginal mucous membrane, it may be noted,
is analogous to that of the skin. D. Berry Hart, "Note on the Development
of the Clitoris, Vagina, and Hymen," _Transactions of the Edinburgh
Obstetrical Society_, vol. xxi, 1896.

[15] W.H.B. Stoddart, "Anaesthesia in the Insane," _Journal of Mental
Science_, October, 1899.

[16] Gina Lombroso, "Sur les Reflexes Cutanes," International Congress of
Criminal Anthropology, Amsterdam, _Comptes Rendus_, p. 295.

III.

The Secondary Sexual Skin Centres--Orificial Contacts--Cunnilingus and
Fellatio--The Kiss--The Nipples--The Sympathy of the Breasts with the
Primary Sexual Centres--This Connection Operative both through the Nerves
and through the Blood--The Infl