dynasty was no more; and the distance and decline of the Mogul khans soon enfranchised him from the control of a superior. He was situate on the verge of the Greek empire: the Koran sanctified his _gazi_, or holy war, against the infidels; and their political errors unlocked the passes of Mount Olympus, and invited him to descend into the plains of Bithynia. Till the reign of PalÊologus, these passes had been vigilantly guarded by the militia of the country, who were repaid by their own safety and an exemption from taxes. The emperor abolished their privilege and assumed their office; but the tribute was rigorously collected, the custody of the passes was neglected, and the hardy mountaineers degenerated into a trembling crowd of peasants without spirit or discipline. It was on the twenty-seventh of July, in the year twelve hundred and ninety-nine of the Christian Êra, that Othman first invaded the territory of Nicomedia; [40] and the singular accuracy of the date seems to disclose some foresight of the rapid and destructive growth of the monster. The annals of the twenty-seven years of his reign would exhibit a repetition of the same inroads; and his hereditary troops were multiplied in each campaign by the accession of captives and volunteers. Instead of retreating to the hills, he maintained the most useful and defensive posts; fortified the towns and castles which he had first pillaged; and renounced the pastoral life for the baths and palaces of his infant capitals. But it was not till Othman was oppressed by age and infirmities, that he received the welcome news of the conquest of Prusa, which had been surrendered by famine or treachery to the arms of his son Orchan. The glory of Othman is chiefly founded on that of his descendants; but the Turks have transcribed or composed a royal testament of his last counsels of justice and moderation. [41] [Footnote 40: See Pachymer, l. x. c. 25, 26, l. xiii. c. 33, 34, 36; and concerning the guard of the mountains, l. i. c. 3--6: Nicephorus Gregoras, l. vii. c. l., and the first book of Laonicus Chalcondyles, the Athenian.]