These works, however, are all more or less tainted by the same defect, that they have not been founded upon that complete and comprehensive examination of all the existing materials for the history of this early period, and that critical discrimination of their relative value and analysis of their contents, without which any view of this period of the annals of the country must be partial and inexact. They labour, in short, under the twofold defect, first, of an uncritical use of the materials which are authentic; and second, of the combination with these materials of others which are undoubtedly spurious. The early chronicles are referred to as of equal authority, and without reference to the period or circumstances of their production. The text of Fordun’s Chronicle, upon which the history, at least prior to the fourteenth century, must always to a considerable extent be based, is quoted as an original authority, without adverting to the materials he made use of and the mode in which he has adapted them to a fictitious scheme of history; and the additions and alterations of his interpolator Bower are not only founded upon as the statements of Fordun himself, but quoted under his name in preference to his original version of the events. The author has elsewhere endeavoured to complete the work commenced by Thomas Innes. He has collected together in one volume the whole of the existing chronicles and other memorials of the history of Scotland prior to the appearance of Fordun’s Chronicle, and has subjected them, as well as the work of Fordun, to a critical examination and analysis.[11] He now proposes to take a farther step in advance, and to attempt in the present work to place the early history of the country upon a sounder basis, and to exhibit Celtic Scotland, so far as these materials enable him to do so, in a clearer and more authentic light. By following their guidance, and giving effect to fair and just inferences from their statements unbiassed by theory or partiality, and subjected to the corrective tests of comparison with those physical records which the country itself presents, it is hoped that it may not be found impossible to make some approximation to the truth, even with regard to the annals of this early period of Scottish history. It may be said that this task has been rendered unnecessary by the appearance of Mr. Burton’s History of Scotland, which commences the narrative with the invasion of Agricola, and claims ‘the two fundamental qualities of a serviceable history—completeness and accuracy;’[12] but, with much appreciation of the merits of Mr. Burton’s work as a whole, the author is afraid that he cannot recognise it as possessing either character, so far as the early part of the history is concerned, and he considers that the ground which the present work is intended to occupy remains still unappropriated. [Sidenote: Spurious authorities.]