ON another occasion also St. Columba prophesied in the following manner of Cormac, grandson of Lethan, a truly pious man, who not less than three times went in search of a desert in the ocean, but did not find it. ‘In his desire to find a desert, Cormac is this day, for the second time, now embarking from that district which lies at the other side of the river Moda (the Moy, in Sligo), and is called Eirros, Domno (Erris, in Mayo); nor even this time shall he find what he seeks, and that for no other fault than that he has irregularly allowed to accompany him in the voyage a monk who is going away from his own proper abbot without obtaining his consent.’