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 *dividual matter. The only criterion of any importance is that both partners feel completely satisfied with the amount of intercourse they are having. If one of the partners is dissatisfied, the subject should be open for discussion in a very frank manner. No cause for feelings of rejection by a partner should be allowed to develop in silence.

There will always be periods in which, because of exterior circumstances (pregnancy, business worries, sickness, etc.), the rate of intercourse in any marriage may slow down or stop for a while.

(2) Variations in woman's sexual desire

There are such variations, as far as most of the research undertaken so far can determine. Katherine Davis, in a study of one thousand married women, and studies by Marie Stokes, Therese Benedek, and others indicate that the desire of women vary during the menstrual cycle. According to Hannah and Abraham Stone, who have made a study of a large number of women, "Most state that their erotic impulses are increased either a few days before the onset of the menstrual flow or, more usually, right after menstruation, although the latter rise may be partly due to the abstinence which is generally maintained during the menstrual week." Stokes reported also a second rise of sexual desire at some point in the middle of the menstrual month. There are apparently individual differences in the cycle of desire, and a woman can best determine for herself her own particular rhythm.

There is much to be learned about this matter. The relationship between hormonal secretion and female sexuality and "femininity" has been most recently studied by Therese Benedek in her book Psychosexual Functions in Women. This is a technical book, but anyone interested in