FOOTNOTE:
[12] At the Iron Gate the Danube quits the Austrian Dominions and enters those of Turkey. The country on the south continues for some time mountainous, then hilly, and by degrees sinks into a plain: on the north is the great level of Wallachia. In its course towards the Black Sea, the Danube divides, frequently forming numerous islands, especially below Silistria. Its width where undivided now averages from fifteen hundred to two thousand yards, its depth above twenty feet. Before reaching its mouth, several large rivers flow into it, as the Alt, Sereth, and Pruth. On its junction with the last-mentioned river it divides into several branches, which do not again unite, and it at last terminates its long course by issuing through seven several mouths into the Black Sea.