The insular position of Britain has already furnished an indisputable and well-defined base on which to rear the argument of primitive colonization. The valuable mineral wealth of some portions of its soil happily supply no less satisfactory data for those of its early civilisation. Little doubt can now be entertained that Herodotus, in his allusions to the Cassiterides, or Tin Islands, refers to the celebrated districts of Cornwall and the neighbouring isles, which still abound with the same mineral wealth that conferred on them such ancient and wide-spread fame. The era of the father of history dates from B.C. 484--the year assigned as that of his birth--probably to nearly the close of the century. At this early period, then, while the Republic of Rome was only assuming form, and Athens was just rising into importance, the commerce of the British Isles attracted the navies of Tyre and Carthage; nor does it seem improbable that the Phœnicians traded with the miners of Cornwall and the Scilly Islands at a much earlier period, if indeed we must not look to these ancient Cassiterides as one of the chief sources from whence even the Egyptians and Assyrians derived the tin with which they alloyed and hardened their earliest tools. More definite, and, as it is believed, authentic information regarding the British Isles is derived from the "Ora Maritima" of Festus Avienus, circa B.C. 400, from which we learn that Britain was visited at that early period by Carthaginian voyagers, and that the _Albiones_ occupied the larger island, while the smaller island was possessed by the _Gens Hibernorum_. In so far as this early writer may be relied upon, his observations appear to sanction the conclusion that a pure Celtic population then possessed the whole British Isles, and that it is in the interval between this epoch and the invasion of Julius Cæsar that we must look for the intrusion of the newer continental races, indiscriminately termed by Cæsar, _Britanni_. In complete confirmation of this, and of the consequent retreat of the aboriginal Albiones towards the remoter districts, we find the name of Albion afterwards exclusively applied to the northern part of Britain, and all the earliest traditions and writings of both the Welsh and Scottish Celtæ assigning to them the name of Albanich. A Celtic race, however, continued to occupy the primeval districts of Cornwall, and preserved almost to our own day a distinct dialect of the Celtic tongue.