What a hardy people they must have been! How successfully for untold generations did they pit themselves against the rigour of this most inhospitable climate! With no tool but the stone-axe and the flint knife, with no weapon but the bow and arrow and spear, with no material for fish nets but root fibres, or for fish-hooks or needles but bone, and with no means of fire making save two dry sticks--one wonders at the skill and patient endurance that rendered subsistence possible at all. And there follows quickly upon such wonder a hot flush of indignation that, after so conquering their savage environment or accommodating themselves to it, that they not only held their own but increased throughout the land, they should be threatened with a wanton extermination now that the resources of civilisation are opened to them, now that tools and weapons and the knowledge of easier and more comfortable ways of life are available. The natives of the interior are of two races, the Indian and the Esquimau. The Indian inhabits the valley of the Yukon down to within three or four hundred miles of its mouth; the Esquimau occupies the lower reaches of the Yukon and the Kuskokwim and the whole of the rivers that drain into the Arctic Ocean west and north. These inland Esquimaux are of the same race as the coast Esquimaux and constitute an interesting people, of whom something has been said in the account of journeys through their country. [Sidenote: THE ATHABASCANS] The Indians of the interior are of one general stock, the Athabascan, as it is called, and of two main languages derived from a common root but differing as much perhaps as Spanish and Portuguese. The language of the upper Yukon (and by this term in these pages is meant the upper American Yukon) is almost identical with the language of the lower Mackenzie, from which region, doubtless, these people came, and with it have always maintained intercourse. The theory of the Asiatic origin of the natives of interior Alaska has always seemed fanciful and far-fetched to the writer. The same translations of the Bible and the Book of Common Prayer serve for the lower Mackenzie and the upper Yukon and are in active use to-day through all that wide region, despite minor dialectical variations. Near the lower ramparts of the Yukon, at Stephen's Village, the language changes and the new tongue maintains itself, though with continually increasing dialectical differences, until the Indians overlap the Esquimaux, six hundred miles farther down. Fort Yukon is the most populous place on the river, and the last place on the river, where the upper language, or Takhud, is spoken. A stretch of one hundred and fifty miles separates it from the next native village, and the inhabitants of that village are not intelligible to the Fort Yukon Indians--an unintelligibility which seems to speak of long ages of little intercourse. * * * * *