The universal geography : earth and its inhabitants

24GRUSSIA IX BDEOPB.Silesia and Poznania belongs to the Warta basin—that is, to the Oder—while theprovince of Suwalki, in the north-east, is comprised in the Xiemen basin. All therest of the land is watered by the Vistula, the Narev, the Bug, and their affluents.On entering Poland the Vistula, or Visla, is already a noble stream, navigablefor craft of considerable draught, and from 820 to 1,300 feet wide. Enlarged by theSan, on the Austrian frontier, and farther down by the Wieprz, Pilica, and Bug, itdischarges a mean volume of at least 27,000 cubic feet per second before reachingPrussian territory, beyond which it receives no further tributaries of any size.Thanks to this water highway, the Poles are able to ship for Dantzic their timber,cereals, and produce of all kinds.Poland abounds in prehistoric remains of the various stone, bronze, and ironages. The Bug and Vistula valleys were naturally followed by the migratoryFig. 117.—The Lisa Gora Range.Scale 1 : 445,000.^',-yte^£?^