During four years Alexander remained in the heart of Persia, reducing to subjection the chiefs who still struggled for independence, and regulating the government of the conquered provinces. Ambitious of farther conquests, he passed the Indus, and invaded the country of the Indian king Po'rus, whom he defeated in a sanguinary engagement, and took prisoner. Alexander continued his march eastward until he reached the Hyph'asis, the most eastern tributary of the Indus, when his troops, seeing no end of their toils, refused to follow him farther, and he was reluctantly forced to abandon the career of conquest, which he had marked out for himself, to the Eastern ocean. He descended the Indus to the sea, whence, after sending a fleet with a portion of his forces around through the Persian Gulf to the Euphrates, he marched with the remainder of his army through the barren wastes of Gedro'sia, and after much suffering and loss once more reached the fertile provinces of Persia. * * * * * VIII. THE DEATH OF ALEXANDER. For some time after his return Alexander's attention was engrossed with plans for organizing, on a permanent basis, the government of the mighty empire that he had won. Aiming to unite the conquerors and the conquered, so as to form out of both a nation independent alike of Macedonian and Persian prejudices, he married Stati'ra, the oldest daughter of Darius, and united his principal officers with Persian and Median women of the noblest families, while ten thousand of his soldiers were induced to follow the example of their superiors. But while he was occupied with these cares, and with dreams of future conquests, his career was suddenly terminated by death. On setting out to visit Babylon, in the spring of 324, soon after the decease of an intimate friend --Hephæs'tion--whose loss caused a great depression of his spirits, he was warned by the magicians that Babylon would be fatal to him; but he proceeded to the city to conclude his preparations for his next ambitious scheme--the subjugation of Arabia. Babylon was now to witness the consummation of his triumphs and of his life. "As in the last scene of some well-ordered drama," says a modern historian, "all the results and tokens of his great achievements seemed to be collected there to do honor to his final exit." Although his mind was actively occupied in plans of conquest, he was haunted by gloomy forebodings and superstitious fancies, and endeavored to dispel his melancholy by indulging freely in the pleasures of the table. Excessive drinking at last brought to a crisis a fever which he had probably contracted in the marshes of Assyria, and which suddenly terminated his life in the thirty-third year of his age, and the thirteenth of his reign (323 B.C.). He was buried in Babylon. From the Latin poet LUCAN we take the following estimate of His Career and His Character.