The most remarkable tumulus, at New Grange, has been described at length by several eminent antiquarians. It stands on elevated ground, and covers about three acres, the main part being two hundred and eighty feet in diameter and about one hundred and twenty feet high. It is now covered with dense vegetation. It is a vast cairn of loose stones, estimated at one hundred thousand tons, those at the base being very large--from six to eight feet long and four or five feet thick. They are arranged in a circle without masonry; simply laid in order and smaller stones placed inside and on top of them until an artificial cavern was created, which was reached by a passage sixty-two feet long, formed of enormous upright stones from five to eight feet high and roofed with flagstones of great size. This passage leads to a low dome-roofed chamber, nearly circular, whose ceiling is supported by eleven upright pillars. The ceiling is nineteen and a half feet from the ground. There are three other chambers, measuring eighteen by twenty-one feet in size, which at one time were doubtless filled with the bodies of the royal families. The archæologists compare them to the beehive tombs of Mycenæ, known as "The Treasury of Atreus," and find many resemblances. The surfaces of some of the stones are rudely carved with cryptographs and ornamental designs. There are several other tumuli in the neighborhood of different dates and dimensions and of absorbing interest to science; and all of them we know, from that accurate and comprehensive chronicle, "The Annals of the Four Masters," were plundered by the Danes in the year 801. Those vandals left nothing but bones and cinerary urns; they took away or destroyed everything else. The tumuli are now in the custody of the board of works, which is taking care of them, and is having careful scientific excavations and other examinations made by competent authorities. There are several other cemeteries in the neighborhood that are not so old, and they also are supposed to contain the dust of kings; but few of the graves have been identified. One of them, marked with two tombstones set with their tops together like the gable of a house, has been declared to be of greater antiquity than any other Christian tomb in Ireland, and is supposed to contain the remains of St. Eric, the first bishop consecrated by St. Patrick. He died toward the end of the fifth century. It is said that his custom was to stand immersed in the Boyne River up to his two armpits from morn till evening, having his psalter lying before him on the strand where he could read its pages, and continually engaging in prayer.