Paragraph 46 46. Now the region of the Euxine upon which Dareios was preparing to march has, apart from the Scythian race, the most ignorant nations within it of all lands: for we can neither put forward any nation of those who dwell within the region of Pontus as eminent in ability, nor do we know of any man of learning 45 having arisen there, apart from the Scythian nation and Anacharsis. By the Scythian race one thing which is the most important of all human things has been found out more cleverly than by any other men of whom we know; but in other respects I have no great admiration for them: and that most important thing which they have discovered is such that none can escape again who has come to attack them, and if they do not desire to be found, it is not possible to catch them: for they who have neither cities founded nor walls built, but all carry their houses with them and are mounted archers, living not by the plough but by cattle, and whose dwellings are upon cars, these assuredly are invincible and impossible to approach.
Paragraph 47 47. This they have found out, seeing that their land is suitable to it and at the same time the rivers are their allies: for first this land is plain land and is grassy and well watered, and then there are rivers flowing through it not much less in number than the channels in Egypt. Of these as many as are noteworthy and also can be navigated from the sea, I will name: there is Ister with five mouths, and after this Tyras, Hypanis, Borysthenes, Panticapes, Kypakyris, Gerros and Tanaïs. These flow as I shall now describe.
Paragraph 48 48. The Ister, which is the greatest of all the rivers which we know, flows always with equal volume in summer and winter alike. It is the first towards the West of all the Scythian rivers, and it has become the greatest of all rivers because other rivers flow into it. And these are they which make it great: 46—five in number are those 47 which flow through the Scythian land, namely that which the Scythians call Porata and the Hellenes Pyretos, and besides this, Tiarantos and Araros and Naparis and Ordessos. The first-mentioned of these is a great river lying towards the East, and there it joins waters with the Ister, the second Tiarantos is more to the West and smaller, and the Araros and Naparis and Ordessos flow into the Ister going between these two.