theatres which seated a larger audience than any present public buildings in Europe; amphitheatres more extensive and costly than Cologne, Milan, and York Minster cathedrals combined, and seating eight times as many spectators as could be crowded into St. Peter's Church; circuses where, it is said, three hundred and eighty-five thousand persons could witness the games and chariot-races at a time; bridges, still standing, which have furnished models for the most beautiful at Paris and London; aqueducts carried over arches one hundred feet in height, through which flowed the surplus water of distant lakes; drains of solid masonry in which large boats could float; pillars more than one hundred feet in height, coated with precious marbles or plates of brass, and covered with bas-reliefs; obelisks brought from Egypt; fora and basilicas connected together, and extending more than three thousand feet in length, every part of which was filled with "animated busts" of conquerors, kings, statesmen, poets, publicists, and philosophers; mausoleums greater and more splendid than that Artemisia erected to the memory of her husband; triumphal arches under which marched in stately procession the victorious armies of the Eternal City, preceded by the spoils and trophies of conquered empires. Such was the proud capital,--a city of palaces, a residence of nobles who were virtually kings, enriched with the accumulated treasures of ancient civilization. Great were the capitals of Greece and Asia, but how pre-eminent was Rome, since all were subordinate to her! How bewildering and bewitching to a traveller must have been the varied wonders of the city! Go where he would, his eye rested on something which was both a study and a marvel. Let him drive or walk about the suburbs,--there were villas, tombs, aqueducts looking like our railroads on arches, sculptured monuments, and gardens of surpassing beauty and luxury. Let him approach the walls,--they were great fortifications extending twenty-one miles in circuit, according to the measurement of Ammon as adopted by Gibbon, and forty-five miles according to other authorities. Let him enter any of the various gates that opened into the city from the roads which radiated to all parts of Italy and the world,--they were of monumental brass covered with bas-reliefs, on which the victories of generals for a thousand years were commemorated. Let him pass through any of the crowded thoroughfares,--he saw houses towering scarcely ever less than seventy feet, as tall as those of Edinburgh in its oldest sections. Most of the houses in which this vast population lived, according to Strabo, possessed pipes which gave a never-failing supply of water from the rivers that flowed into the city through the aqueducts and out again through the sewers into the Tiber. Let the traveller walk up the Via Sacra,--that short street, scarcely half a mile in length,--and he passed the Flavian Amphitheatre, the