It seems highly probable that if any individual term came into use, whether monogamy, patriarchal polygyny, "group marriage," or promiscuity prevailed, it would be that which expresses the relationship of a mother to her child. The only other possibility would be that in the first two conditions mentioned the relation of husband to wife might take precedence.
In actual practice we find that the name which a mother applies to her own child is applied by her equally to the children of the women whom her husband might have married. This state of things may obviously arise from one of three causes, (a) In the first place the name may have been originally that which a mother applied to her own son, and it may have been extended to those who were her nephews in a state of monogamy, or stepsons (= sons of other women by the same father) in a state of polygyny either with or without polyandry. (b) The theory that a name was applied originally to own and collateral relatives has already been discussed, so far as it refers to the "undivided commune." The case of regulated promiscuity is different and must be considered here. (c) On the other hand the name which she uses may have been expressive of tribal status or group status, and may have had nothing to do with descent.
It is unnecessary to say much about the first of these possibilities. First, there is no evidence to show that such a thing has taken place; secondly, we can see no reason why such a thing should take place; thirdly, if such a change of meaning did take place, it is quite clear that we have no grounds for regarding the philological evidence for group marriage as having the slightest significance.
In connection with the second hypothesis—that the names actually represent the relations formerly existing, it may be well to preface the discussion by a few remarks on the regulation of marriage in Australia. The rules by which the Australian native is bound, when he sets out to choose a wife, make the area of choice as a rule dependent on his status, that is to say, he must, in order to find a wife, go to another phratry, class, totem-kin, or combination of two of these, membership of which depends on descent, direct or indirect; on the other hand he may be limited by regulations dependent on locality, that is to say he may have to take a wife from a group resident in a certain area. There is reason to suppose that the latter regulations are the outcome of earlier status regulations which have fallen into desuetude. However this may be, all that we are here concerned with is the fact that regulations in this case also are virtually dependent on descent, inasmuch as a man is not in practice free to reside where he likes, but remains in his own group, though occasionally he joins that of his wife (this does not apparently affect the exogamic rule). The groups are therefore to all intents and purposes totem-kins with male descent.
Taking the Kurnai as our example of the non-class-organised groups, we find that the fraternal relationship once started goes on for ever; the result of this is that with few exceptions the whole of the intermarrying groups, so far as they are of the same generation, are brothers and sisters. Dr Howitt, whose authority on matters of Australian ethnology is final, recognises that on the principles on which group marriage is deduced from terms of relationship, this fact should point to the Kurnai being yet in the stage of the undivided commune (why, it is difficult to see, when they are definitely exogamous), but regards the argument from terms of relationship as untrustworthy in this instance. If it is not reliable in one case it may well be unreliable in all; we are entitled to ask supporters of the hypothesis of group marriage what differentiates this case from those in which they have no doubt of the validity of the philological argument.
Now if Dr Howitt's doubts as to the interpretation to be put upon the Kurnai terms of relationship are correct, we may reasonably, in the absence of proof that they originated in a different way from the Malayan terms, ask ourselves upon what basis the case for promiscuity rests. Beyond a few customs, and it will be shown below that it is unnecessary to regard them as survivals of a period when marriage was unknown, the proof is purely philological, and on examination the philological proof is found to be wanting.
Dr Howitt, in his recent book, rests the case for the undivided commune (i.e. promiscuity) on the Australian terms of relationship which he discusses, viz. those of the Dieri and the Kurnai. He will not admit that the Kurnai terms point to the undivided commune; we are therefore left with the Dieri terms. But the Dieri organisation, so far from being that of an undivided commune, is the two-phratry arrangement by which a man is by no means free to marry any woman in his tribe, but is limited to one-half of the women; further, tribal customs limit his choice still further and compel him to marry his mother's mother's brother's daughter's daughter (these terms do not refer to blood but so-called "tribal" relationship, i.e. it is a woman with a certain tribal status whom he has to marry). Where then does Dr Howitt find his proof of promiscuity?
We have, it is true, a certain number of tribal legends, according to which the phratry organisation was instituted to prevent the marriage of too near kin. But, quite apart from the fact that tribal legends are not evidence, the legends merely point to a period when marriage was unregulated, when a man was free to marry any woman, not when he was de facto or de jure the husband of every woman. Even if it be proved beyond question that marriage was once unregulated, it does not follow that promiscuity prevailed.
The existence of the undivided commune is a proof of promiscuity only for those who discover proofs of group marriage in the divided commune, in other words in the terms of relationship and the customs of the ordinary two-phratry tribe of the present day. We may therefore let the decision of the question of the validity of terms of relationship as a proof of extensive connubial activities rest upon the discussion of the evidence to be drawn from the tribes selected by Dr Howitt and Messrs Spencer and Gillen, viz. the Dieri and the Urabunna.
It may however be pointed out that neither of these writers has dealt with the passage from promiscuity to "group marriage," nor shown how under the former system terms of relationship could come into existence at all. With the difficulties we have dealt above.