- orated 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.
TRAJAN'S COLUMN.
This column is one of the most celebrated monuments
of antiquity. Its height, including the pedestal
and statue, is one hundred and forty-four English
feet. It was erected in the centre of the forum
of Trajan, and was dedicated to that emperor by the
senate and people of Rome in commemoration of
his decisive victory over the Dacians. It is of the
Doric order, and its shaft is constructed of thirty-four
pieces of Greek marble, hollowed out in the
