As a matter of fact, by a certain tendency to fanciful construction, natural in all early speculations about a new domain of facts, many problems in the study of primitive kinship have been artificially simplified, others unduly complicated and obscured. Thus, for instance, when in the discussion of primitive forms of marriage the whole problem of the position of the children and of the emotional attitude of the parents towards them has been neglected; or when different legal terms have been applied to undifferentiated societies and legal ideas attributed to primitive man, without asking how far and under what conditions this may be done; or, again, when the sexual aspect has been treated as the only essential feature of marriage. On the other hand, the concepts of "primitive promiscuity," "descent through females only," "mother-right" and "father-right" have proved meaningless and abstruse; the two latter, of course, as far only as they have been used in the majority of cases without a satisfactory definition. It is easy to see why such somewhat artificial conceptions have found their way into the study of primitive marriage and kinship. In the early days of these studies work had been done not by specialists, who would try to apply to a new set of problems new methods, but by men learned in other branches of science, who looked at the facts, not full in the face, but from a peculiar and often remote standpoint. The illustrious founder of these studies on the Continent, the Swiss _savant_ Bachofen, was a student of history of law and classical culture, and he was chiefly concerned with establishing the primitive mother-right of the prehistoric Greeks and Romans. The chief theoretical interest of the eminent ethnographer Morgan was the unravelling of the riddle of primitive forms of marriage out of the invaluable material contained in his tables of kinship terms. McLennan assigns a prominent place in his investigations to factors which had hardly ever played a very important part in primitive society, as, for instance, marriage by capture, female infanticide and levirate. It is evident that in all these and similar speculations the chief attention was not drawn to the actual working of the social mechanism, but to survivals, rudiments and fictitious primeval conditions. And the method of sociological thinking has not been developed upon living social forms, but upon shadows and petrified remains. Whenever concrete institutions have been theoretically treated, they were approached with preconceived ideas, as, for instance, in the well-known monograph of Fison and Howitt, and in the book of Herr H. Cunow--both works relating to Australian kinship organization. When reading the theoretical chapters of the latter, one has the impression that the Australian tribes were a museum of sociological fossils from various ancient epochs of which the petrified form has been rigidly preserved, but into whose inner nature it is quite hopeless to inquire. The