The Polynesian, or rather the Hawaian family, formed essentially by the conjugal union of a group of brothers with a group of sisters, may evidently be restricted in two ways. Either, in the long run, polyandry is found irksome; the men will no longer share their wives, even with brothers, but find polygamy very convenient; in this case the brothers contract isolated marriages, preserving nothing of the old ways but the custom of marrying, when possible, a group of sisters: the Redskins have done and still do this. Or, on the contrary, for one reason or another, and most often on account of the relative scarcity of women, the Hawaian marriage evolves in another direction. The brothers continue to marry in a group; but, instead of marrying simultaneously several sisters, they take only one wife and possess her in common: this time it is in the direction of polyandry that primitive group-marriage has evolved. From the Himalaya to Ceylon we find a long track of ethnic groups who have thus transformed their marriage. The mountaineers of Bhootan, the Naïrs, certain other aboriginal tribes of India, and a part of the population of Ceylon, where the Tamils have largely immigrated, are all of them the remains or landmarks of an ancient layer of polyandric population traversing the whole of Hindostan. All these facts can be classed in a satisfactory manner. Thus united, and placed in a series, they complete and throw a light on each other, and show us the reason of customs which before appeared inexplicable. All this evolution is quite admissible, but it is important to restrict it to the populations with which it actually appears to be connected, and not to make of it a universal law, applicable to the whole human race. VI. _The Clan and the Family._