before the formation of the Mississippi alluvia, science may spare itself the trouble of looking elsewhere for the origin of the American race! The high authority of Professor Agassiz was adduced at the time in support of this and other equally crude assumptions; but they have ceased to receive the countenance of men of science. Meanwhile the progress of European discovery has familiarised us with the idea of the rude primeval race of its Palæolithic era, so designated in reference to their characteristic implements recovered from the river-drift of France and England, and from the sedimentary accumulations of their rock shelters and limestone caves. That flint and stone implements of every variety of form abound in the soil of the New World, has been established by ample proof; and if mere rudeness could be accepted as evidence of antiquity, many of them rival in this respect the rudest implements of the European drift. But it has to be kept in view that the indigenous tribes of America have scarcely even now abandoned the manufacture of implements of obsidian, flint, and stone, or of bone and ivory. So striking, indeed, is the analogy between the simple arts of the palæolithic cave-men of Southern France, and those still practised by the Eskimo, that Professor Boyd Dawkins inferred from this conclusive evidence of a pedigree for the Arctic aborigines little less ancient than that which Dr. Dowler long ago deduced from his discovery in the delta of the Mississippi. The implements and accumulated debris of the ancient hunters of the Garonne, the contemporaries of the mammoth and other extinct mammals, and of the reindeer, musk-sheep, cave-bear, and other species known only within the historic period in extreme northern latitudes, undoubtedly suggest interesting analogies with the modern Eskimo. Only under similar climatic conditions to those in which they now live, could such accumulations of animal remains as have been found in the caves of the valley of the Vésère be possible in places habitually resorted to by man. But such analogies form a very slender basis on which to found the hypothesis that the race of the Mammoth and Reindeer period in the remote Post-Pliocene era of Southern France has its living representatives within the Arctic circle of the American continent.