The greater number of the tales were, as I have said, in prose. But some were in poetry; and in many of the prose tales the leading characters are often made to express themselves in verse, or some striking incident of the story is repeated in a poetical form. Not unfrequently the fragments of verse introduced into a prose tale are quotations from an older poetical version of the same tale; and hence it often happens that while the prose may be plain enough, the poetry is often archaic and obscure. At some very early period in Ireland--how early we have now no means of determining with certainty--Celtic thought began to be committed to writing; and as everything seems to have been written down that was considered worth preserving, manuscripts accumulated in course of time, which were kept either in monasteries, or in the houses of the hereditary professors of learning. But in the dark time of the Danish ravages, and during the troubled centuries that followed the Anglo-Norman invasion, the manuscript collections were gradually dispersed, and a large proportion lost or destroyed. Yet we have remaining--rescued by good fortune from the general wreck--a great body of manuscript literature. Our two most important collections are those in Trinity College and in the Royal Irish Academy, Dublin; where we have manuscripts of various ages, from the year 1100 down to the present century, on every conceivable subject--Annals, History, Biography, Theology, Romance, Legend, Science, etc. These manuscripts, which, it should be remarked, are nearly all copies from older books, contain a vast collection of romantic literature: it may, indeed, be said that there is scarcely one important event in our early history, or one important native personage or native legend, that has not been made the subject of some fanciful story. The volume I now offer to the notice of the public contains eleven tales, selected and translated from the manuscripts of Trinity College and of the Royal Irish Academy. Some have been already published, with original text and _literal_ translation, and are to be found in the Transactions of various literary societies, where, however, they are inaccessible to the general run of readers; and even if they were accessible, they are almost unreadable, the translations having been executed, not for literary, but for linguistic purposes. Others have never been translated or given to the public in any shape or form till now. Of the whole collection of eleven tales, therefore, it may be said that they are quite new to the general mass of the reading public. And furthermore, this is the first collection of the old Gaelic prose romances that has ever been published in fair English translation.