10. The situation and inhabitants of Britain have been described by many writers; [36] and I shall not add to the number with the view of vying with them in accuracy and ingenuity, but because it was first thoroughly subdued in the period of the present history. Those things which, while yet unascertained, they embellished with their eloquence, shall here be related with a faithful adherence to known facts. Britain, the largest of all the islands which have come within the knowledge of the Romans, stretches on the east towards Germany, on the west towards Spain, [37] and on the south it is even within sight of Gaul. Its northern extremity has no opposite land, but is washed by a wide and open sea. Livy, the most eloquent of ancient, and Fabius Rusticus, of modern writers, have likened the figure of Britain to an oblong target, or a two-edged axe. [38] And this is in reality its appearance, exclusive of Caledonia; whence it has been popularly attributed to the whole island. But that tract of country, irregularly stretching out to an immense length towards the furthest shore, is gradually contracted in form of a wedge. [39] The Roman fleet, at this period first sailing round this remotest coast, gave certain proof that Britain was an island; and at the same time discovered and subdued the Orcades, [40] islands till then unknown. Thule [41] was also distinctly seen, which winter and eternal snow had hitherto concealed. The sea is reported to be sluggish and laborious to the rower; and even to be scarcely agitated by winds. The cause of this stagnation I imagine to be the deficiency of land and mountains where tempests are generated; and the difficulty with which such a mighty mass of waters, in an uninterrupted main, is put in motion. [42] It is not the business of this work to investigate the nature of the ocean and the tides; a subject which many writers have already undertaken. I shall only add one circumstance: that the dominion of the sea is nowhere more extensive; that it carries many currents in this direction and in that; and its ebbings and flowings are not confined to the shore, but it penetrates into the heart of the country, and works its way among hills and mountains, as though it were in its own domain. [43]