Part of this pleasure flows from the mere sense of rapid motion. In going down a swift reach of the river there is the same sensation about one's diaphragm which is felt when one goes forward smoothly on a lofty rope swing. Now the first few days of the Danube are upon very fast waters. Between its source and Ulm the descent of the river is about 1,500 feet.[VIII.] This would give 300 feet of fall for each of a five days' journey; and it will be seen from this that the prospect for the day's voyage is most cheering when you launch in the morning and know you will have to descend about the height of St. Paul's Cathedral before halting for the night. [VIII.] The best geographical books give different estimates of this, some above and others below the amount here stated. Another part of the pleasure--it is not to be denied--consists in the satisfaction of overcoming difficulties. When you have followed a channel chosen from several, and, after half-a-mile of it, you see one and another of the rejected channels emerging from its island to join that you are in, there is a natural pride in observing that any other streamlet but the one you had chosen would certainly have been a mistake. These reflections are by the way; and we have been winding the while through a rich grassy plain till a bridge over the river made it seem quite a civilized spot, and, just as I passed under, there drove along one of the green-boughed waggons of jovial singers returning from Donaueschingen. Of course they recognised the canoe, and stopped to give her a hearty cheer, ending with a general chorus made up of the few English words of their vocabulary, "All r-r-r-r-ight, Englishmánn!" "All r-r-r-r-ight, Englishmánn!"[IX.] [IX.] See sketch, _ante_, page 49. The coincidence of these noisy but good-humoured people having been assembled in the morning, when the canoe had started from the source of the Danube, caused the news of its adventure to be rapidly carried to all the neighbouring towns, so that the Rob Roy was welcomed at once, and the newspapers recorded its progress not only in Germany and France, but in England, and even in Sweden and in America.