or founded ten castles in the hills above Tortosa. About the year 1280, they were extirpated by the Mamalukes.] [Footnote 251: Compare Von Hammer, Geschichte der Assassinen, p. 283, 307. Wilken, Geschichte der Kreuzzüge, vol. vii. p. 406. Price, Chronological Retrospect, vol. ii. p. 217--223.--M.] [Footnote 26: As a proof of the ignorance of the Chinese in foreign transactions, I must observe, that some of their historians extend the conquest of Zingis himself to Medina, the country of Mahomet, (Gaubil p. 42.)] [Footnote 261: Compare Wilken, vol. vii. p. 410.--M.] [Footnote 262: On the friendly relations of the Armenians with the Mongols see Wilken, Geschichte der Kreuzzüge, vol. vii. p. 402. They eagerly desired an alliance against the Mahometan powers.--M.] [Footnote 263: Trebizond escaped, apparently by the dexterous politics of the sovereign, but it acknowledged the Mogul supremacy. Falmerayer, p. 172.--M.] III. No sooner had Octai subverted the northern empire of China, than he resolved to visit with his arms the most remote countries of the West. Fifteen hundred thousand Moguls and Tartars were inscribed on the military roll: of these the great khan selected a third, which he intrusted to the command of his nephew Batou, the son of Tuli; who reigned over his father's conquests to the north of the Caspian Sea. [264] After a festival of forty days, Batou set forwards on this great expedition; and such was the speed and ardor of his innumerable squadrons, than in less than six years they had measured a line of ninety degrees of longitude, a fourth part of the circumference of the globe. The great rivers of Asia and Europe, the Volga and Kama, the Don