Of the _Imrama_ or voluntary sea expeditions (to which the present story belongs) there are, according to O'Curry (Lect. MS. Mat. 289), only four remaining, all very ancient. Of these the best known is the "Voyage of St. Brendan," undertaken in the sixth century, which was at one time celebrated all over Europe, and which has been lately made the theme of a fine poem by Denis Florence McCarthy. Another of these _Imrama_ is the "Voyage of the Sons of O'Corra," which has been described at some length by Professor O'Curry (Lect. MS. Mat. 289). Of this I have a copy which I made from the MS. 23. M. 50, Royal Irish Academy (and which I afterwards carefully compared with another copy lent me by my friend, Mr. W.M. Hennessy). I made a translation of this story, intending to print it in the present volume; but as there is a much older and better copy in the ancient "Book of Fermoy," which I had not time to consult in detail, I have thought it better to hold back for the present the strange adventures of the sons of O'Corra. A beautiful poetical translation of the whole tale has been made by Mr. T.D. Sullivan of Dublin, and published in his volume of Poems. THE FAIRY PALACE OF THE QUICKEN TREES. The "Bruighean Caerthainn," or "The Fairy Palace of the Quicken Trees," which is now translated for the first time, is one of the most popular of the Gaelic romances. I had three of the Royal Irish Academy MSS. before me when translating it--viz., 23. C. 30, transcribed in 1733, by the Irish writer and lexicographer, Andrew Mac Curtin of the county Clare; 24. B. 15, written in 1841; and 23. L. 24, copied in 1766, by Dermot O'Mulqueen of the county Clare. This is one of a type of stories very common in Gaelic romantic literature:--One or more of the heroes are entrapped by some enchanter and held under a spell in a castle, or a cave, or a dungeon; till, after a series of adventures, they are released by the bravery or mother-wit of some of their companions. "The Chase of Slieve Fuad" and "The Chase of Slieve Cullinn" are two other examples of this class of Gaelic tales. THE PURSUIT OF THE GILLA DACKER AND HIS HORSE. This is a humorous story of a trick--a very serious practical joke--played by Avarta, a Dedannan enchanter, on sixteen of the Fena, whom he carried off to "The Land of Promise;" and of the adventures of Finn, Dermat O'Dyna, and the others, in their pursuit of Avarta (who had taken the shape of the Gilla Dacker) to recover their companions. It may be regarded as belonging to the same class as the last story. O'Curry described the opening of this tale in his Lectures (MS. Mat. 316); and he was the first, so far as I know, to draw attention to it. I think it strange that such a story should not have been noticed before by writers on Gaelic literature; for as a work of imagination, it seems to me a marvellous and very beautiful creation.