First, in the person of John Reid, a Glasgow bookseller of Lowland birth, who published in 1832 his _Bibliotheca Scoto-Celtica_, or “an account of all the books which have been printed in the Gaelic language,” down to that date. Second, in the person of the Rev. Donald Maclean, minister of Duirinish, Skye, who brought the catalogue forward to 1900, arranging the authors’ names alphabetically, and giving the various editions, with their dates and places of publication. This MS., which has not yet been printed, contains in addition a complete transcript of the title of each work, an account of the author or translator so far as known, the number of copies printed, size of paper, and published price, and in the case of the very rare books, an account of the copies known to exist, and the price they fetched on transfer. Had it not been for the earlier researches of Reid, it is not likely so elaborate an effort would have ever been attempted. Even Reid seems to have been lured on gradually, all unconscious at first of the magnitude of the task, for he says that his book was not written with the view of being published. On the contrary, its _raison d’être_ is thus explained by him in the preface:— While studying the Gaelic language in 1825 a friend wished me to make up a catalogue of his Gaelic books. It appeared, after the list was made up, scarcely probable that many more should exist, and under the idea of having almost already completed the list, the present work was undertaken. All the Gaelic books in the neighbourhood were examined, but I found the work increase so rapidly on my hands that it became necessary to class them and re-write the whole; and the longer I searched the more I was convinced that the literature of the Gael was richer than even its friends imagined. The number of translations, song-books, etc., which I now met with, many of them works which I had never previously heard of, obliged me four times to extend the plan originally adopted, and to re-write the MS. Reid ransacked the principal libraries in this country and on the Continent in search of Gaelic books, yet he admits the list must necessarily be imperfect. When finished, the work was awarded a premium by the Highland Society of London in 1831, and printed the following year. It has been the aim of his bibliographic successor to supplement and complete the list by a new classification up to date. Both men deserve credit for having patiently and persistently pursued what was undoubtedly an interesting but eminently thankless task, so far at least as financial remuneration was concerned.