IV.--ANNALISTS OF CLONMACNOISE 276 Tighernach 276 _Chronicon Scotorum_ 278 Gilla-Christ O'Maeileon 279 _Annals of Clonmacnoise_ 279 V.--THE "LEABHAR-NA-H-UIDHRE" 280 Conn-na-m-Bocht 280 VI.--DICUIL, THE GEOGRAPHER 281 The _De Mensura Orbis Terrarum_ 281 His Learning 284 Irish Pilgrimage to Jerusalem 285 The "Barns of Joseph" 286 Dicuil's reference to Iceland 287 Love of the Ancient Irish Monks for island solitudes 288 Iceland and the Faroe Isles occupied by Irish Monks prior to discovery of these islands by the Danes 289 Dicuil's testimony that Sedulius was an Irishman 290 CHAPTER XIII. THE COLUMBIAN SCHOOLS IN IRELAND. I.--ST. COLUMBA'S EDUCATION 291 St. Columba, a typical Celt 291 Early History 292 Goes to the School of St. Finnian at Moville 294 Columba at the School of Clonard 295 Columba at Glasnevin 296 He returns to his native territory 297 II.--COLUMBA FOUNDS DERRY 298 Columcille's original Church 298 Personal description of Columba 299 III.--THE SCHOOLS OF DURROW AND KELLS 301 Columba founded the Monastery of Durrow 301 Interesting incidents 302 Cormac Ua Liathain 303 The _Book of Durrow_ 304 Ancient remains at Durrow 305 Assassination of De Lacy 306