APOLLODORUS THE ARCHITECT.

This great architect, who flourished about A. D. 100, was born at Damascus. By his great genius he acquired the favor of the emperor Trajan, for whom he executed many works. He built the great Square of Trajan, to effect which, he leveled a hill, one hundred and forty-four feet high; in the centre he raised the famous column, of the same height as the hill that had been removed, which commemorated the victories of Trajan, and served as a monument to that victorious Emperor. Around the Square, he erected the most beautiful assemblage of buildings then known in the world, among which was the triumphal arch commemorative of Trajan’s victories. The marble pavements of this Square are fifteen feet below the streets of modern Rome. Apollodorus also erected a college, a theatre appropriated to music, the Basilica Nepia, a celebrated library, the Baths of Trajan, aqueducts, and other important works at Rome. His most famous work was a stone bridge over the Danube, in Lower Hungary, near Zeverino. It was one mile and a half long, three hundred feet high, forty feet wide, and was built upon twenty piers and twenty-two arches. Its extremities were defended by two fortresses. Trajan had it constructed to facilitate the passage of his troops, but his successor dismantled it, fearing that the barbarians would use it against the Romans.