[11] Debreyne, _Moechialogie_, p. 277. And from the Protestant side see
Northcote (_Christianity and Sex Problems_, Ch. IX), who permits sexual
intercourse during pregnancy.

[12] See Appendix A to the third volume of these _Studies_; also Ploss and
Bartels, loc. cit.

[13] Thus one lady writes: "I have only had one child, but I may say that
during pregnancy the desire for union was much stronger, for the whole
time, than at any other period." Bouchacourt (_La Grossesse_, pp. 180-183)
states that, as a rule, sexual desire is not diminished by pregnancy, and
is occasionally increased.

[14] This "inconvenience" remains to-day a stumbling-block with many
excellent authorities. "Except when there is a tendency to miscarriage,"
says Kossmann (Senator and Kaminer, _Health and Disease in Relation to
Marriage_, vol. i, p. 257), "we must be very guarded in ordering
abstinence from intercourse during pregnancy," and Ballantyne (_The
Foetus_, p. 475) cautiously remarks that the question is difficult to
decide. Forel also (_Die Sexuelle Frage_, fourth edition, p. 81), who is
not prepared to advocate complete sexual abstinence during a normal
pregnancy, admits that it is a rather difficult question.

[15] This point is discussed, for instance, by Séropian in a Paris Thesis
(_Fréquence comparée des Causes de l'Accouchement Prémature_, 1907); he
concludes that coitus during pregnancy is a more frequent cause of
premature confinement than is commonly supposed, especially in primiparæ,
and markedly so by the ninth month.

[16] "Infantile Mortality: The Huddersfield Scheme," _British Medical