The opposite theory of the gens is that to which Mr. M'Lennan inclined. 'The composition and organisation of Greek and Roman tribes and commonwealths cannot well be explained except on the hypothesis that they resulted from the joint operation, in early times, of exogamy, and the system of kinship through females only.' {268} 'The gens', he adds, 'was composed of all the persons in the tribe bearing the same name and accounted of the same stock. Were the gentes really of different stocks, as their names would imply and as the people believed? If so, how came clans of different stocks to be united in the same tribe? . . . How came a variety of such groups, of different stocks, to coalesce in a local tribe?' These questions, Mr. M'Lennan thought, could not be answered on the patriarchal hypothesis. His own theory, or rather his theory as understood by the present writer, may be stated thus. In the earliest times there were homogeneous groups, which became, totem kin. Let us say that, in a certain district, there were groups called woodpeckers, wolves, bears, suns, swine, each with its own little territory. These groups were exogamous, and derived the name through the mother. Thus, in course of time, when sun men married a wolf girl, and her children were wolves, there would be wolves in the territory of the suns, and thus each stock would be scattered through all the localities, just as we see in Australia and America. Let us suppose that (as certainly is occurring in Australia and America) paternal descent comes to be recognised in custom. This change will not surprise Sir Henry Maine, who admits that a system of male may alter, under stress of circumstances, to a system of female descents. In course of time, and as knowledge and common sense advance, the old superstition of descent from a woodpecker, a bear, a wolf, the sun, or what not, becomes untenable. A human name is assumed by the group which had called itself the woodpeckers or the wolves, or perhaps by a local tribe in which several of these stocks are included. Then a fictitious human ancestor is adopted, and perhaps even adored. Thus the wolves might call themselves Claudii, from their chief's name, and, giving up belief in descent from a wolf, might look back to a fancied ancestor named Claudius. The result of these changes will be that an exogamous totem kin, with female descent, has become a gens, with male kinship, and only the faintest trace of exogamy. An example of somewhat similar processes must have occurred in the Highland clans after the introduction of Christianity, when the chief's Christian name became the patronymic of the people who claimed kinship with him and owned his sway.