Of the family relations of our primitive ancestors in the _rita_ period we know little, except through inference or analogy. The so-called "natural forms" of marriage by purchase and capture were doubtless practiced, but probably not exclusively; and these customs were handed down to the second period, though they were modified to bring them into harmony with the higher ethical and social ideas which had then gained predominance.[63] Whether or not the absolute power of the father and the strict rule of agnation prevailed it would be as difficult to affirm as to deny.[64] In the _dharma_ period the ancient _rita_ conception of marriage as an ordinance of nature, whose real purpose is to provide posterity, is still retained; but it gains a social character.[65] The central principle of the Aryan household is the Hestia-Vesta cult, or the worship of the sacred hearth. To gain the protection of the ancestral gods the hearth-fire must be kept always burning; and the care of the family _sacra_ is the special function of the house-father, who is lord and priest of the family. But the house-mother holds a worthy position in the domestic worship. From the first kindling of the hearth-fire at the nuptials, she appears as co-priestess and helper of her husband in the sacred rites. The whole life-partnership of the wedded pair is shaped and dominated by lofty religious motives. The Aryan housewife is not the chattel of her husband; she is a free woman and shares in his highest sacred functions. The primary purpose of the union is the birth of a legitimate son to perpetuate the paternal line and to foster the ancestral cult.[66] So paramount is this motive that, in case no son is born in wedlock, resort may be had to adoption, or to analogous expedients for the fictitious extension of fatherhood. For among the Aryans, as Maine suggests, the fiction of adoption is of the highest legal importance; and, indeed, very widely among the races of mankind it has served a useful purpose in social progress.[67] Here also the Aryan wife appears as co-priestess with her husband. Each is regarded as having a share in the begetting of the child, and they unite in giving the son in adoption to another household.[68] Accordingly the wife is not the mere chattel of her husband, who owns the children by virtue of his proprietorship in the mother.[69] The house-father appears in the sacred books as lord of the wife, who owes him reverence and obedience; yet she is not reduced to patriarchal slavery. With the husband she exercises joint control over the sons; and these are released entirely from parental authority when they marry and establish new households.[70] The male line takes legal precedence; but the maternal kindred are clearly recognized in a way wholly inconsistent with strict agnation.[71] According to the primitive Indic conception the wife is regarded as incapable of property. Neither the widow nor the daughters could inherit, the