Morgan himself was evidently deeply impressed by the function of the classificatory system of relationship as a body of salutations. His own experience was derived from the North American Indians, and he notes the exclusive use of terms of relationship in address, a usage so habitual that an omission to recognise a relative in this manner would amount almost to an affront. Morgan also points out, as one motive for the custom, the presence of a reluctance to utter personal names. McLennan had to rely entirely on the evidence collected by Morgan, and there can be no doubt that he was greatly influenced by the stress Morgan himself laid on the function of the classificatory terms as mutual salutations. That in rude societies certain relatives have social functions definitely assigned to them by custom was known in Morgan’s time, and I think it might even then have been discovered that the relationships which carried these functions were of the classificatory kind. It is, however, only by more recent work, beginning with that of Howitt, of Spencer and Gillen, and of Roth in Australia, and of the Cambridge Expedition to Torres Straits, that the great importance of the functions of relatives through the classificatory system has been forced upon the attention of sociologists. The social and ceremonial proceedings of the Australian aborigines abound in features in which special functions are performed by such relatives as the elder brother or the brother of the mother, while in Torres Straits I was able to record large groups of duties, privileges and restrictions associated with different classificatory relationships.
Further work has shown that widely, though not universally, the nomenclature of the classificatory system carries with it a number of clearly defined social practices. One who applies a given term of relationship to another person has to behave towards that person in certain definite ways. He has to perform certain duties towards him, and enjoys certain privileges, and is subject to certain restrictions in his conduct in relation to him. These duties, privileges and restrictions vary greatly in number among different peoples, but wherever they exist, I know of no exception to their importance and to the regard in which they are held by all members of the community. You doubtless know of many examples of such functions associated with relationship, and I need give only one example.
In the Banks Islands the term used between two brothers-in-law is wulus, walus, or walui, and a man who applies one of these terms to another may not utter his name, nor may the two behave familiarly towards one another in any way. In one island, Merlav, these relatives have all their possessions in common, and it is the duty of one to help the other in any difficulty, to warn him in danger, and, if need be, to die with him. If one dies, the other has to help to support his widow and has to abstain from certain foods. Further, there are a number of curious regulations in which the sanctity of the head plays a great part. A man must take nothing from above the head of his brother-in-law, nor may he even eat a bird which has flown over his head. A person has only to say of an object “That is the head of your brother-in-law,” and the person addressed will have to desist from the use of the object. If the object is edible, it may not be eaten; if it is one which is being manufactured, such as a mat, the person addressed will have to cease from his work if the object be thus called the head of his brother-in-law. He will only be allowed to finish it on making compensation, not to the person who has prevented the work by reference to the head, but to the brother-in-law whose head had been mentioned. Ludicrous as some of these customs may seem to us, they are very far from being so to those who practise them. They show clearly the very important part taken in the lives of those who use the classificatory system by the social functions associated with relationship. As I have said, these functions are not universally associated with the classificatory system, but they are very general in many parts of the world and only need more careful investigation to be found even more general and more important than appears at present.
Let us now look at our own system of relationship from this point of view. Two striking features present themselves. First, the great paucity of definite social functions associated with relationship, and secondly, the almost complete limitation of such functions to those relationships which apply only to individual persons and not to classes of persons. Of such relationships as cousin, uncle, aunt, father-in-law, or mother-in-law there may be said to be no definite social functions. A school-boy believes it is the duty of his uncle to tip him, but this is about as near as one can get to any social obligation on the part of this relative.
The same will be found to hold good to a large extent if we turn to those social regulations which have been embodied in our laws. It is only in the case of the transmission of hereditary rank and of the property of a person dying intestate that more distant relatives are brought into any legal relationship with one another, and then only if there is an absence of nearer relatives. It is only when forced to do so by exceptional circumstances that the law recognises any of the persons to whom the more classificatory of our terms of relationship apply. If we pay regard to the social functions associated with relationship, it is our own system, rather than the classificatory, which is open to the reproach that its relationships carry into them no rights and duties.
In the course of the recent work of the Percy Sladen Trust Expedition in Melanesia and Polynesia I have been able to collect a body of facts which bring out, even more clearly than has hitherto been recognised, the dependence of classificatory terms on social rights.[6] The classificatory systems of Oceania vary greatly in character. In some places relationships are definitely distinguished in nomenclature which are classed with other relationships elsewhere. Thus, while most Melanesian and some Polynesian systems have a definite term for the mother’s brother and for the class of relatives whom the mother calls brother, in other systems this relative is classed with, and is denoted by, the same term as the father. The point to which I now call your attention is that there is a very close correlation between the presence of a special term for this relative and the presence of special functions attached to the relationship.
In Polynesia, both the Hawaiians and the inhabitants of Niue class the mother’s brother with the father, and in neither place was I able to discover that there were any special duties, privileges or restrictions ascribed to the mother’s brother. In the Polynesian islands of Tonga and Tikopia, on the other hand, where there are special terms for the mother’s brother, this relative has also special functions. The only place in Melanesia where I failed to find a special term for the mother’s brother was in the western Solomon Islands, and that was also the only part of Melanesia where I failed to find any trace of special social functions ascribed to this relative. I do not know of such functions in Santa Cruz, but my information about the system of that island is derived from others, and further research will almost certainly show that they are present.
In my own experience, then, among two different peoples, I have been able to establish a definite correlation between the presence of a term of relationship and special functions associated with the relationship. Information kindly given to me by Father Egidi, however, seems to show that the correlation among the Melanesians is not complete. In Mekeo, the mother’s brother has the duty of putting on the first perineal garment of his nephew, but he has no special term and is classed with the father. Among the Kuni, on the other hand, there is a definite term for the mother’s brother distinguishing him from the father, but yet he has not, so far as Father Egidi knows, any special functions.
Both in Melanesia and Polynesia a similar correlation comes out in connection with other relationships, the most prominent exception being the absence of a special term for the father’s sister in the Banks Islands, although this relative has very definite and important functions. In these islands the father’s sister is classed with the mother as vev or veve, but even here, where the generalisation seems to break down, it does not do so completely, for the father’s sister is distinguished from the mother as veve vus rawe, the mother who kills a pig, as opposed to the simple veve used for the mother and her sisters.
There is thus definite evidence, not only for the association of classificatory terms of relationship with special social functions, but from one part of the world we now have evidence which shows that the presence or absence of special terms is largely dependent on whether there are or are not such functions. We may take it as established that the terms of the classificatory system are not, as McLennan supposed, merely terms of address and modes of mutual salutation. McLennan came to this conclusion because he believed that the classificatory terms were associated with no such functions as those of which we now have abundant evidence. He asks, “What duties or rights are affected by the relationships comprised in the classificatory system?” and answers himself according to the knowledge at his disposal, “Absolutely none.”[7] This passage makes it clear that, if McLennan had known what we know to-day, he would never have taken up the line of attack upon Morgan’s position in which he has had, and still has, so many followers.