In each tribe one of the Rangatira is the Ariki, or principal chief; but, as he is necessarily a Rangatira, he is always addressed by that title, and, in consequence, a stranger finds some difficulty, even after a prolonged visit, in ascertaining who is the Ariki. Among the New Zealanders there is no Salic law, so that the Ariki need not be a warrior, and may be a woman. The office is hereditary, and the existing Ariki is always held in the highest veneration in virtue of his descent. Even the hostile tribes respect an Ariki, and in most cases, if he should be captured in battle, the victors will spare his life. One or two of the most powerful chiefs living have been captured and afterward released, whereas, had they been common men, or even ordinary Rangatiras, they would have been killed, their bodies eaten, and their heads dried and fixed as trophies on the houses of their conquerors. A sort of tax, or tribute, is paid by the different families, though the tax is entirely a voluntary one, and may be great or small, or withheld altogether, at pleasure. Mostly the Ariki is a man of considerable mental powers, and, in such a case, he exercises great authority over the tribe, either as a priest or a warrior. There is nothing to prevent the Ariki from assuming the office of priest, and in many instances he has been able to exercise a far greater influence by spiritual than by physical means. The Rangatira are the great men, or nobles, of the land, and with them, as with the Ariki, the rank is hereditary. The law of succession is very remarkable, the eldest son being the heir to his father’s rank; but if the child dies, the youngest, and not the next eldest, becomes the lawful successor. These two heirs, the eldest and the youngest sons, are called by a name which signifies the fat of the earth. Each Rangatira is independent of his fellows, though they collectively form a sort of body which we may compare with the House of Peers in England. Any Rangatira who has sufficient influence may gather together the members of his clan, build a fortified village, or pah, and become a petty sovereign in his own dominions. It is in this way that the various clans, or sub-tribes, are formed, each gathering round a noble of more than usual ability, and adopting a name by which the members will ever afterward be known. The free men form the great body of the warriors; some of them being the sons of Rangatira, and others merely having the privilege of free birth; which carries with it the right of tattooing the face. Sometimes a free man who is remarkable for his generalship and courage will take the command of an expedition, even though men of higher rank than himself should be engaged in it.