Monasterboice, or the Monastery of Boethius, a bishop who died in 521, situated in county Louth, has a number of crosses, several of which are in excellent preservation. The Great Cross, as it is called, stands twenty-two feet in height, and is on the south side of the church. A second example, which is also near the church, has been described as "the most beautiful specimen of Celtic stone-work now in existence," this is the Cross of Muiredach. It is covered with carvings of scriptural scenes, and bears on the front the inscription (in Erse), "Pray for Muiredach, by whom this Cross was made." The venerable builder was Abbot of Armagh, and died in 923 or 924. Drumcliff, near Sligo, and many other places in Ireland also possess most interesting crosses. [Illustration: THE CROWLE STONE.] A curiously carved shaft in the church of S. Oswald at Crowle, in North Lincolnshire, has been supposed by many to be the shaft of a very ancient cross, and if so, must almost certainly be included amongst those raised as memorials. It is covered on one side with an involved chain pattern roughly suggesting a snake swallowing its tail, and on the other are some human and animal figures, the meaning of which has never been satisfactorily explained. What makes the shaft especially interesting is the presence of the fragment of a runic inscription. The wall into which the Crowle stone is built was part of the eleventh century church of the place, and this ancient memorial to some long-forgotten hero was obviously taken from some neighbouring spot and converted into a lintel for the west door by the Norman builders.[3] Another memorial cross of quite a different type is the Hall Cross of Doncaster. It was erected by, or in memory of, Oti, or Otho di Tilli, steward of Conisborough for the Earl of Warren, under Stephen and Henry II. It would have been destroyed by the troopers of the Earl of Manchester in the Civil War, but for the action of the mayor, who succeeded in preserving it; but in 1792 it was taken down on making some alterations in the level of the road, and another cross of the same character was put up in the following year on Hall Cross Hill. It consists of a centre circular column, with four others much smaller placed about it, each of the five originally terminating in a cross. Its memorial character is preserved by the old Norman-French inscription, which it still bears, "Icest est la cruice Ote di Tilli a ki alme Deu en face merci. Amn." It served a more gruesome purpose in the seventeenth century, being the spot chosen for the exposition of the heads of decapitated traitors.