These measurements have been made in this way: a ship will generally accomplish seventy thousand orguiae in a long day's voyage, and sixty thousand by night. This being granted, seeing that from the Pontus' mouth to the Phasis (which is the greatest length of the sea) it is a voyage of nine days and eight nights, the length of it will be one million one hundred and ten thousand orguiai, which make eleven thousand stades. From the Sindic region to Themiscura on the Thermodon river (the greatest width of the Pontus) it is a voyage of three days and two nights; that is, of three hundred and thirty thousand orguiai, or three thousand three hundred stades. Thus have I measured the Pontus and the Bosporus and Hellespont, and they are as I have said. Furthermore, a lake is seen issuing into the Pontus and not much smaller than the sea itself; it is called the Maeetian lake, and the mother of the Pontus.