ugal
devotion.--Hindoo models and ideals.--Slavonic sex mores.--
Russian sex mores.--Tribes of the Caucasus.--Mediaeval sex
mores.--The standard of the "good wife"; pair marriage.--"One
flesh."--Pair marriage.--Marriage in modern mores.--Pair
marriage, its technical definition.--Ethics of pair marriage.--
Pair marriage is monopolistic.--The future of marriage.--The
normal type of sex union.--Divorce.--Divorce in ethnography.--
Rabbis on divorce.--Divorce at Rome.--Pair marriage and
divorce.--Divorce in the Middle Ages.--Refusal of remarriage.--
Child marriage.--Child marriage in Hindostan.--Child marriage
in Europe.--Cloistering women.--Second marriages; widows.--
Burning of widows.--Difficulty of reform of suttee in India.--
Widows and remarriage in the Christian church.--Remarriage and
other-worldliness.--Free marriage.--The Japanese woman.

+357. Meaning of sex mores.+ The sex mores are one of the greatest and
most important divisions of the mores. They cover the relations of men
and women to each other before marriage and in marriage, with all the
rights and duties of married and unmarried respectively to the rest of
the society. The mores determine what marriage shall be, who may enter
into it, in what way they may enter into it, divorce, and all details of
proper conduct in the family relation. In regard to all these matters it
is evident that custom governs and prescribes. When positive
institutions and laws are made they always take up, ordain, and
regulate what the mores have long previously made facts in the social
order. In the administration of law also, especially by juries, domestic
relations are controlled by the mores. The decisions rendered by judges
utter in dogmatic or sententious form the current notions of truth and
right about those relations. Our terms "endogamy," "mother family,"
"polyandry," etc., are only descriptive terms for a summary of the
folkways which have been established in different groups and which are
capable of classification.

+358. The sex difference.+ The economy and advantage of sex
differentiation are primarily physical. "As structural complexity
increases, the female generative system becomes more and more complex.
All this involves a great expenditure of energy, and we can clearly see
how an ovum-producing organism would benefit by being spared the
additional effort required for seeking out and impregnating another
organism, and h