. The earth and its inhabitants ... Geography. AECTIC EUSSIA. 345 nmuiug north-west and south-east parallel with those scored on the rocks of Finland and Olonetz. The uplands sepiratiug- the Volga and arctic basins still bear the traces of the frozen masses by which they were fornierl}^ covered. As thé}^ gradually melted, these glaciers formed the fresh-water lakes now filling all the hollows of the land, and which formerly rose 60 or 70 feet above their present level. This Fig. 182.—Northern Urals. Scale 1 : 3,600,OCO. E ofP 59°|40' 63 40'. E of G 20 Miles. region seems never to have been inv
. The earth and its inhabitants ... Geography. AECTIC EUSSIA. 345 nmuiug north-west and south-east parallel with those scored on the rocks of Finland and Olonetz. The uplands sepiratiug- the Volga and arctic basins still bear the traces of the frozen masses by which they were fornierl}^ covered. As thé}^ gradually melted, these glaciers formed the fresh-water lakes now filling all the hollows of the land, and which formerly rose 60 or 70 feet above their present level. This Fig. 182.—Northern Urals. Scale 1 : 3,600,OCO. E ofP 59°|40' 63 40'. E of G 20 Miles. region seems never to have been invaded by the sea, so that during recent epochs no communication can have existed between the Baltic and the Arctic Ocean, as was at one time supposed. The seas were, however, indirectly connected by a laby- rinth of lakes and rivers sufficiently to account for the exchange of fishes and Crustacea which h;is taken place between the two marine basins. In this way the inland waters may have also been colonised by the Phoca ritulina, a species of seal 109. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Reclus, Elisée, 1830-1905; Ravenstein, Ernest George, 1834-1913; Keane, A. H. (Augustus Henry), 1833-1912. New York, D. Appleton and company
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Keywords: ., bookcentury1800, bookdecade18, booksubjectgeography, bookyear1883
