R.W. Taylor, _Practical Treatise on
Sexual Disorders_, 3d ed., p. 418.

[199] L. Tait, _Diseases of Women_, 1889, vol. i, p. 100.

[200] _Obstetric Journal_, vol. i, 1873, p. 558. Cf. G.J. Arnold,
_British, Medical Journal_, January 6, 1906, p. 21.

[201] Dudley, _American Journal of Obstetrics_, July, 1889, p. 758.

[202] A. Reverdin, "Epingles a Cheveux dans la Vessie," _Revue Medicale de
la Suisse Romande_, January 20, 1888. His cases are fully recorded, and
his paper is an able and interesting contribution to this by-way of sexual
psychology. The first case was a school-master's wife, aged 22, who
confessed in her husband's presence, without embarrassment or hesitation,
that the manoeuvre was habitual, learned from a school-companion, and
continued after marriage. The second was a single woman of 42, a _cure's_
servant, who attempted to elude confession, but on leaving the doctor's
house remarked to the house-maid, "Never go to bed without taking out your
hair-pins; accidents happen so easily." The third was an English girl of
17 who finally acknowledged that she had lost two hair-pins in this way.
The fourth was a child of 12, driven by the pain to confess that the
practice had become a habit with her.

[203] "One of my patients," remarks Dr. R.T. Morris, of New York,
(_Transactions of the American Association of Obstetricians_, for 1892,
Philadelphia, vol. v), "who is a devout church-member, had never allowed
herself to entertain sexual thoughts referring to men, but she masturbated
every morning, when standing before the mirror, by rubbing against a key
in the bureau-drawer. A man never excited her passions, but the sight of a
key in any bureau-drawer aroused erotic desires."

[204] Freud (_Drei Abhandlungen zur Sexualtheorie_, p. 118) refers to the
sexual pleasure of swinging. Swinging another person may be a source of
voluptuous excitement, and one of the 600 forms of sexual pleasure
enumerated in De Sade's _Les 120 Journees de Sodome_ is (according to
Duehren) to propel a girl vigorously in a swing.

[205] The fact that horse exercise may produce pollutions was well
recognized by Catholic theologians, and Sanchez states that this fact need
not be made a reason for traveling on foot. Rolfincius, in 1667, pointed
out that horse-riding, in those unaccustomed to it, may lead to nocturnal
pollutions. Rohleder (_Die Masturbation_, pp. 133-134) brings together
evidence regarding the influence of horse exercise