CHAPTER VI

Ethnology and history of the sexual life of man and of marriage--Origin of marriage--Antiquity of matrimonial institutions--Criticism of the doctrine of promiscuity-- Marriage and celibacy--Sexual advances and demands of marriage--Methods of attraction--Liberty of choice--Sexual selection--Law of resemblance--Hybrids--Prohibition of consanguineous marriages--Role of sentiment and calculation in sexual selection--Marriage by purchase--Decadence of marriage by purchase--Dowry--Nuptial ceremonies--Forms of marriage--Duration of marriage--History of extra-nuptial sexual intercourse 144

Sexual evolution--Phylogeny and ontogeny of sexual life 192