There are many cases pointing to this new father-force asserting itself and pushing aside the earlier order. Again I can give one or two examples only. Among Wayao and Mang'anja of the Shire highlands, south of Lake Nyassa, a man on marrying leaves his own village and goes to live in that of his wife; but, as an alternative, he is allowed to pay a bride-price, in which case he takes his wife away to his home.[192] Whenever we find the payment of a bride-price, there is sure indication of the decay of mother-right: woman has become property. Among the Bassa Komo of Nigeria marriage is usually effected by an exchange of sisters or other female relatives. The women are supposed to be faithful to their husbands. If, however, as frequently happens, there is a preliminary courtship period, during which the marriage is considered as provisional, considerable licence is granted to the woman. Chastity is only regarded as a virtue when the woman has become the property of the husband. The men may marry as many wives as they have sisters or female relatives to give in exchange. In this tribe the women look after the children, but the boys, when four years old, go to work and live with their fathers.[193] The husbands of the Bambala tribe (inhabiting the Congo states between the rivers Inzia and Kwilu) have to abstain from visiting their wives for a year after the birth of each child, but they are allowed to return to her on the payment to her father of two goats.[194] Among the Basanga on the south-west of Lake Moeru the children of the wife belong to the mother's kin, but the children of slaves are the property of the father.[195] It is rendered clear by such cases as these, that the rise of father-right was dependent on property and had nothing to do with blood relationship. The payment of a bride-price, the giving of a sister in exchange, as also marriage with a slave, gained for the husband the control over his wife and ownership of her children. I could bring forward much more evidence in proof of this fact did the limits of my space allow me to do this; such cases are common in all parts of the world where the transitional stage from mother-right to father-right has been reached. But I believe that the causes by which the father gained his position as the dominant partner in marriage must be clear to every one from the examples I have given. I will, therefore, quote only one final and most instructive case. It illustrates in a curious way the conflict between the old rights of the woman and the rising power of the male force in connection with marriage. It occurs among the Hassanyeh Arabs of the White Nile, where the wife passes by contract for only a portion of her time under the authority of her husband.