The earliest writer who gives us any detailed description of what these traditions were, is the Rev. Charles Beatty, who visited the Delaware settlements in Ohio in 1767. On his way there, he met a white man, Benjamin Button, who for years had been a captive among the natives. He related to Beatty the following tradition, which he had heard recited by some old men among the Delawares:-- "That of old time their people were divided by a river, nine parts of ten passing over the river, and one part remaining behind; that they knew not, for certainty, how they came to this continent; but account thus for their first coming into these parts where they are now settled; that a king of their nation, where they formerly lived, far to the west, left his kingdom to his two sons; that the one son making war upon the other, the latter thereupon determined to depart and seek some new habitation; that accordingly he sat out, accompanied by a number of his people, and that, after wandering to and fro for the space of forty years, they at length came to Delaware river, where they settled 370 years ago. The way, he says, they keep an account of this is by putting on a black bead of wampum every year on a belt they keep for that purpose."[234] From another source Mr. Beatty obtained the traditions of the Nanticokes, which is apparently a version of that of their relatives, the Delawares. It ran to this effect: At some remote age, while on their way to their present homes, "They came to a great water. One of the Indians that went before them tried the depth of it by a long pole or reed, which he had in his hand, and found it too deep for them to wade. Upon their being non-plussed, and not knowing how to get over it, their God made a bridge over the water in one night, and the next morning, after they were all over, God took away the bridge."[235] A curious addition to this story is mentioned by Loskiel.[236] The number of the mythical ancestors of their race who thus were left on the shore of the great water was _seven_. This at once recalls the seven caves (_Chicomoztoc_) or primitive stirpes of the Mexican tribes, the seven clans (_vuk amag_) of the Cakchiquels, the seven ancestors of the Qquechuas, etc., and strongly intimates that there must be some common natural occurrence to give rise to this widespread legend.[237] Some peculiar sacredness must have attached to this number among the Delawares also, as we are informed that the period of isolation of their women at the catamenial period was seven days.[238] The lunar month of 28 days, if divided and assigned equally to each of the four cardinal points, would give a week of seven days to each. Something of this kind seems to have been done by another Algonkin tribe, the Ottawas, who declared that the winds are caused (alternately?) by seven genii or gods who dwelt in the air.[239]