this list is the man of the river deposits, or the River-drift man, who differs, as we shall presently see, both in culture and in range, from the man of the caverns.
Incoming Arctic Species.
The third group to be considered consists of living species of northern habit (see Fig. 24).
The arctic lemming, an inhabitant of the circumpolar regions of Asia and America, and not found farther south in the latter continent than Unalaska in N. lat. 54°, lived in the Pleistocene age as far to the south as Quedlinburg in Saxony, and the valley of the Loire in France, and as far to the west as the caverns of the Mendip Hills; while the allied Norwegian species, now restricted to the Scandinavian peninsula and Russian Lapland, ranged as far south into Germany as Saxony, and into England as Somerset. The Russian vole, also, of Scandinavia, Lapland, northern Russia, and Kamtchatka, then lived in Somersetshire; and the varying hare (=the Irish hare=blue hare of Scotland), of the cold hilly districts of Britain and of the continent, as well as northern Europe and Asia as far as the Arctic Sea, has been discovered in the caverns of Suabia (Fraas) and Switzerland (Mawdach).
