II.--THE SCHOOL OF INISCALTRA 513 Island of Iniscaltra 513 St. Columba of Terryglass 513 Death of St. Columba 515 St. Caimin 517 Round Tower of Iniscaltra 519 St. Caimin's Church 519 Sculptured stones 520 Iniscaltra ravaged by the Danes 521 III.--OTHER MONASTIC SCHOOLS OF THOMOND 522 St. Brendan of Birr 522 St. Cronan of Roscrea 523 _Book of Dimma_ 524 CHAPTER XXII. LATER SCHOOLS OF THE WEST. I.--ST. COLMAN'S SCHOOL OF MAYO 527 The Easter Controversy 527 Inisboffin 531 Death of Colman 533 II.--ST. GERALD OF MAYO 534 Life of St. Gerald 534 Adamnan promulgates the celebrated "Lex Innocentiae" 537 Date of St. Gerald's Death 537 III.--SUBSEQUENT HISTORY OF THE SCHOOL OF MAYO 538 Cele O'Duffy 539 IV.--THE SCHOOL OF TUAM 540 St. Jarlath 541 "Meadow of Retreat" 542 St. Brendan visits St. Jarlath's School at Cluainfois 543 St. Jarlath founds Tuam 544 CHAPTER XXII.--(_continued_). CELTIC ART IN THE WESTERN MONASTERIES DURING THE REIGN OF TURLOUGH O'CONNOR. I.--THE O'DUFFYS 547