Nine bridges, two of which are iron, cross the river, and a magnificent avenue nine miles long, called the Circular Road, environs the city. The Bank of Ireland, near the college, is a low but very large building, and was once the House of Parliament. Trinity College opposite--and both are in the very centre of the most crowded business portion of the city--has fine stone buildings, with large and elegantly kept lawns, one opening into the other. The institution was founded by Pope John XXII., closed by Henry VIII., and reopened by Queen Elizabeth, who incorporated it in 1592. Of the many public buildings, such as hospitals, museums, libraries, it is useless to speak. They are noble institutions, and worthy the capital of even England itself. It has a very large pleasure-ground called Phoenix Park, on the edge of the city. This park is well laid out, and is for Dublin what Central Park is for New York, or Fairmount for Philadelphia. There is in it one of the largest and most admirably kept zoölogical gardens of the world. Glasnevin Cemetery, their Mount Auburn or Greenwood, is an elegant city of the dead. Here repose the remains of Daniel O'Connell, under a high, round tower visible from all parts of the grounds. The profusion of sweet-scented lime-trees, and the taste and beauty of the scenery and artificial work, enable it to vie with any cemetery in Europe. In a city like Dublin, where there is so much that is good and great, one is tempted to enlarge the range of his thoughts, and is loth to leave the spot. Before speaking of the Cathedral of St. Patrick, we will give a brief history of cathedral service itself. Till the time of Constantine, Christians were not allowed to erect temples. Early, churches meant only assemblies, not buildings; and by cathedrals were meant their consistories, or places of meeting. It was in 312 that this emperor first granted absolute toleration to Christians. In 325 the Council of Nice was convened, and made, under his sanction, an open declaration that Christianity be thereafter the recognized official religion of the land. The earliest record we have of a distinctive cathedral service is near the end of the fourth century; although there are traces of it at an earlier date, too indistinct to be reliable. St. Basil, at the close of the fourth century says:-- The people flocked to the churches before daylight, first to pray on bended knees, then rising to sing psalms, either in alternate chorus, or one chanting, others following in an under-voice; and this was done in all Egypt, Libya, Thebes, Palestine, Arabia, and Syria.