arms to avenge the insults offered to a prince of Conal Gulban's royal line, whose holiness moreover even then was celebrated through all the North. They gathered together a mighty army--all the Clanna Niall of the North--and met the monarch and his forces at a place called Cuil-Dreimhne (now Cooldrummon) in the parish of Drumcliff, to the north of Sligo. In the bloody battle which followed, the forces of king Diarmaid were nearly annihilated--but Columcille was praying for his kinsmen during the battle, and so they nearly all escaped, whilst the enemy was destroyed. The Psalter, too, it seems, became the prize of the victors, and the most famous heirloom in the family of the O'Donnells. But the blood shed on this occasion weighed heavily on the conscience of Columba, although he may have been the innocent cause of it; and for his share in this battle he narrowly escaped excommunication at the hands of the saints of Ireland later on. With heroic fortitude, however, he accepted the penance imposed upon him by St. Molaise of Innismurray at the cross of Ahamlish in Sligo--to go to foreign lands to preach the Gospel and never look upon his native land again. The saint obeyed and, it is said, religiously kept his vow--for though he returned to Ireland again at the high call of duty, he bandaged his aged eyes with a cloth, so that they were never gladdened even with one glance of the green hills of his native land, which he loved with even more than the passionate tenderness of the Irish heart. He gave expression to his bitter grief in several touching poems, written in the sweet and musical tongue of Erin. The copy of St. Finnian's Psaltery furtively made by Columcille has had a very strange, eventful history, and is perhaps the most interesting of our ancient relics. At present the manuscript, with the casket which contains it, is the property of Sir Richard O'Donnell of Newport in the County Mayo; but it is preserved for public inspection in the strong room of the Royal Irish Academy in Dublin. It is known as the Cathach, or Battler, from the Irish word _Cath_, a battle; and was so called because if carried three times around O'Donnell's host, in battle, on the breast of a priest free from mortal sin, it was sure to bring victory to the clan. Columcille was himself great grandson of Conal Gulban, the great sire of all the Cinel Conal. He thus became the patron of that warlike clan; in defence of his honour and to maintain his right to this very Psalter, they fought the great battle of Cuildreimhne, and they won the victory through his strong prayers. So it was only natural that the Psalter on earth and the saint in heaven should still be shield and buckler for the clan in the hour of danger.