Similar difficulties are presented by the question of the prevalence of the so-called patriarchal power among non-Aryan races. Many apparent examples of despotic authority can be enumerated;[43] but it is often hard to determine whether, as in the cases of the Arabs and Hebrews, we have to do merely with a high degree of power on the part of the house-father or with a genuine _patria potestas_ of the Roman type. Naturally, as Westermarck suggests, the father's authority among savages "depends exclusively, or chiefly, upon his superior strength;"[44] while anything like a patriarchal "system" can only arise later under the influence of ancestor-worship and more developed social and industrial conditions. Where authority depends solely or mainly upon brute force, it is evident that a very protracted patriarchal despotism over the sons is hard to conceive. Moreover, much error has doubtless arisen through falsely assuming that paternal authority and mother-right are incompatible; whereas they may well coexist, as will presently appear. [43] WESTERMARCK, _op. cit._, 224-35, gives an enumeration. Noteworthy examples of patriarchal power are afforded by the ancient Peruvians and Mexicans, and by the modern Chinese and Japanese. On the Nahua and Maya natives see BANCROFT, _Native Races_, II, 247-53, 663-68. _Cf._ KOHLER, "Das Recht der Azteken," _ZVR._, XI, 54, 55; also _ibid._, VI, 374 (Chinese), 333, 334; VII, 373 (Papuas). [44] _Op. cit._, 225. For the Indo-Germanic or Aryan peoples the investigations of Zimmer, Schrader, Delbrück, Kohler, and especially the researches of Leist, enable us to speak with a higher degree of confidence, though only for the period covered by positive linguistic and legal evidence. Bachofen, McLennan, and after them many other writers,[45] as will later be shown, have maintained that among all branches of the Aryan stock conclusive proofs exist of a former matriarchate, or, at any rate, of exclusive succession in the female line. But this view is decidedly rejected, if not entirely overthrown, by the philologists, and depends for its support on the presence in later institutions of alleged survivals. The judgment of Delbrück must probably be accepted as decisive for the present state of linguistic, if not of all scientific, inquiry. He declares that "no sure traces of a former maternal family among the Indo-Germanic peoples have been produced."[46] Similar conclusions are reached by Schrader, Max Müller, and Leist.[47] Also, among the institutional writers, Wake declares that "primitively among the peoples belonging to the wide-spread Aryan or Indo-European stock, while relationship was acknowledged through both parents, descent was traced preferably in the male line;"[48] and Bernhöft, constrained through the evidence presented by Schrader and Delbrück, believes that it is now placed "beyond question that the primitive Aryans did not live according to mother-right," but were united in family groups