At the outset of my first series of Lectures I stated that the necessity of abandoning the historical method of inquiry was involved in the very nature of the investigation which I contemplated, because the relations which the materials to be investigated bear to each other, and to special phases of human culture and civilisation, are neither disclosed by historical record nor discoverable by historical methods of research. I therefore proposed that, for the purposes of this inquiry, we should consider ourselves engaged in the exploration of an unknown region; and that, starting from the borderland where the historic and the non-historic meet, and ascending the stream of time, we should proceed to make such observations of the facts and phenomena encountered in our progress as would enable us to determine their relations by comparison with facts and phenomena already familiar to us, and to deduce conclusions which, so far as they are sound and relevant, would serve as materials for the construction of a logical history of culture and civilisation within the area investigated. Having thus traversed the region characterised by the phenomena of the Early Christianity of Scotland, all that is distinctively Christian is now left behind. Before us lies the whole extent of the Pagan period, resolvable into three great divisions, characterised as the Ages of Iron, of Bronze, and of Stone. In each of these we shall meet with distinctive manifestations of culture, disclosing their peculiar characteristics by their special products. These products are the materials of our investigation, and they fall to be dealt with by the same methods that have been employed in the disclosure of the nature and quality of the culture and civilisation of the Early Christian Time in Scotland. I have adopted this division of the general subject into “Christian Times” and “Pagan Times,” because the phenomena with which I am dealing do themselves exhibit a clearly defined distinction, and are separable from each other by their characteristics according as they are products of Christian or of Pagan forms of culture and civilisation.