For a short age Pict and Hyrkanian snarled at each other over the ruins of the world they had conquered. Then began the glacier ages, and the great Nordic drift. Before the southward moving ice-fields the northern tribes drifted, driving kindred clans before them. The Æsir blotted out the ancient kingdom of Hyperborea, and across its ruins came to grips with the Hyrkanians. Nemedia had already become a Nordic kingdom, ruled by the descendants of the Æsir mercenaries. Driven before the onrushing tides of Nordic invasion, the Cimmerians were on the march, and neither army nor city stood before them. They surged across and completely destroyed the kingdom of Gunderland, and marched across ancient Aquilonia, hewing their irresistible way through the Pictish hosts. They defeated the Nordic-Nemedians and sacked some of their cities, but did not halt. They continued eastward, overthrowing a Hyrkanian army on the borders of Brythunia. Behind them hordes of Æsir and Vanir swarmed into the lands, and the Pictish empire reeled beneath their strokes. Nemedia was overthrown, and the half-civilized Nordics fled before their wilder kinsmen, leaving the cities of Nemedia ruined and deserted. These fleeing Nordics, who had adopted the name of the older kingdom, and to whom the term Nemedian henceforth refers, came into the ancient land of Koth, expelled both Picts and Hyrkanians, and aided the people of Shem to throw off the Hyrkanian yoke. All over the western world, the Picts and Hyrkanians were staggering before this younger, fiercer people. A band of Æsir drove the eastern riders from Brythunia and settled there themselves, adopting the name for themselves. The Nordics who had conquered Hyperborea assailed their eastern enemies so savagely that the dark-skinned descendants of the Lemurians retreated into the steppes, pushed irresistibly back toward Vilayet. Meanwhile the Cimmerians, wandering southeastward, destroyed the ancient Hyrkanian kingdom of Turan, and settled on the southwestern shores of the inland sea. The power of the eastern conquerors was broken. Before the attacks of the Nordheimir and the Cimmerians, they destroyed all their cities, butchered such captives as were not fit to make the long march, and then, herding thousands of slaves before them, rode back into the mysterious east, skirting the northern edge of the sea, and vanishing from western history, until they rode out of the east again, thousands of years later, as Huns, Mongols, Tatars and Turks. With them in their retreat went thousands of Zamorians and Zingarans, who were settled together far to the east, formed a mixed race, and emerged ages afterward as gypsies.