13 (return) [ See Ducange, C. P. l. i. part i. c. 16, and his Observations sur Villehardouin, p. 289. The chain was drawn from the Acropolis near the modern Kiosk, to the tower of Galata; and was supported at convenient distances by large wooden piles.] Between the Bosphorus and the Hellespont, the shores of Europe and Asia, receding on either side, enclose the sea of Marmara, which was known to the ancients by the denomination of Propontis. The navigation from the issue of the Bosphorus to the entrance of the Hellespont is about one hundred and twenty miles. Those who steer their westward course through the middle of the Propontis, may at once descry the high lands of Thrace and Bithynia, and never lose sight of the lofty summit of Mount Olympus, covered with eternal snows. 14 They leave on the left a deep gulf, at the bottom of which Nicomedia was seated, the Imperial residence of Diocletian; and they pass the small islands of Cyzicus and Proconnesus before they cast anchor at Gallipoli; where the sea, which separates Asia from Europe, is again contracted into a narrow channel. 14 (return) [ Thevenot (Voyages au Levant, part i. l. i. c. 14) contracts the measure to 125 small Greek miles. Belon (Observations, l. ii. c. 1.) gives a good description of the Propontis, but contents himself with the vague expression of one day and one night’s sail. When Sandy’s (Travels, p. 21) talks of 150 furlongs in length, as well as breadth we can only suppose some mistake of the press in the text of that judicious traveller.]