But did the phratries or classes then, according to tradition, exist at all? The legend says that the men of the Little Hawk totem _had_ these ‘phratries’ and classes, Kumura and Purula and so on (the names then carrying no known exogamous prohibition, as now, for the legend does not say that these ‘classes’ were exogamous). The Little Hawk men had arrived at the arts of making flint knives, and using them in circumcision. This they taught to less advanced groups, who tooled with fire sticks. But they only let their pupils have ‘very rough’ stone knives (Palæolithic, probably), at first. ‘It was these Little Hawks,’ say our authors, ‘who first gave to the Arunta the four “class” names. We may presume that along with them there was instituted some system of marriage regulations, but what exactly this was there is no evidence to show.’ Either the Little Hawks introduced exogamy, or they did not, a valuable result of traditional evidence.[39] ‘As yet we have no indication of any restrictions with regard to marriage as far as either totems or classes are concerned,’ say Messrs. Spencer and Gillen. Then why does the legend aver that the class names existed? Why did they exist? Now the existing restrictions of the ‘classes’ need explanation, and get it, from the myth; but, as there are no Arunta _totem_ restrictions on marriage, at present the myth naturally says nothing about them. At this mythic period, ‘persons of the Purula and Kumura classes, who may not now marry one another, are represented as living together.’[40] (3) Next ‘the organisation now in vogue was adopted.’ But, in its first shape, due to the wisdom of Emu men, it permitted marriages, which are now (4) forbidden by the superior intelligence of men dwelling further north, ‘and it was decided to adopt the new system,’ that is, the present Arunta ‘class’ system. Now the Arunta are still accepting innovations from the North, and _this_ part of the myth need not be mythical.