to Marriage_, vol. ii, p. 783)
that "interrupted coitus is injurious to the genital system of
those women only who are disturbed in their sensation of delight
by this form of cohabitation, in whom the orgasm is not produced,
and who continue for hours subsequently to be tormented by
feelings of an unsatisfied desire." Equally injurious effects
follow in normal coitus when the man's orgasm occurs too soon.
"These phenomena, therefore," he concludes, "are not
characteristic of interrupted coitus, but consequences of an
imperfectly concluded sexual cohabitation as such." Kisch,
likewise, in his elaborate and authoritative work on _The Sexual
Life of Woman_, also states that the question of the evil results
of _coitus interruptus_ in women is simply a question of whether
or not they receive sexual satisfaction. (Cf. also Fuerbringer,
_Health and Disease in Relation to Marriage_, vol. i, pp. 232 _et
seq._) This is clearly the most reasonable view to take
concerning what is the simplest, the most widespread, and
certainly the most ancient of the methods of preventing
conception. In the Book of Genesis we find it practiced by Onan,
and to come down to modern times, in the sixteenth century it
seems to have been familiar to French ladies, who, according to
Brantome, enjoined it on their lovers.

Coitus reservatus,--in which intercourse is maintained even for
very long periods, during which the woman may have orgasm several
times while the man succeeds in holding back orgasm,--so far from
being injurious to the woman, is probably the form of coitus
which gives her the maximum of gratification and relief. For most
men, however, it seems probable that this self-control over the
processes leading to the involuntary act of detumescence is
difficult to acquire, while in weak, nervous, and erethic persons
it is impossible. It is, however, a desirable condition for
completely adequate coitus, and in the East this is fully
recognized, and the aptitude carefully cultivated. Thus W.D.
Sutherland states ("Einiges ueber das Alltagsleben und die
Volksmedizin unter den Bauern Britischostindiens," _Muenchener
Medizinische Wochenschrift_, No. 12, 1906) that the Hindu smokes
and talks during intercourse in order to delay orgasm, and
sometimes applies an opium paste to the glans of the penis for