Other German cities visited were Frankfort-on-the-Main, Mayence and Cologne. At the latter place, they remained for some time, seeing as well as giving shows. Then they went on to Rotterdam and Amsterdam. The shrewd and enterprising Yankee was much impressed by the thrift and industry of Holland. "It gave me," he afterwards said, "more genuine satisfaction than any other foreign country I have ever visited, if I except Great Britain. Redeemed as a large portion of the whole surface of the land has been from the bottom of the sea, by the wonderful dykes, which are monuments of the industry of whole generations of human beavers, Holland seems to me the most curious, as well as interesting country in the world. The people, too, with their quaint costumes, their extraordinary cleanliness, their thrift, industry and frugality, pleased me very much. It is the universal testimony of all travellers, that the Hollanders are the neatest and most economical people among all nations. So far as cleanliness is concerned, in Holland it is evidently not next to, but far ahead of godliness. It is rare, indeed, to meet a ragged, dirty, or drunken person. The people are very temperate and economical in their habits; and even the very rich--and there is a vast amount of wealth in the country--live with great frugality, though all of the people live well. "As for the scenery, I cannot say much for it, since it is only diversified by thousands of windmills, which are made to do all kinds of work, from grinding grain to pumping water from the inside of the dykes back to the sea again. As I exhibited the General only in Rotterdam and Amsterdam, and to no great profit in either city, we spent most of our time in rambling about to see what was to be seen. In the country villages it seemed as if every house was scrubbed twice and whitewashed once every day in the week, excepting Sunday. Some places were almost painfully pure, and I was in one village where horses and cattle were not allowed to go through the streets and no one was permitted to wear their boots or shoes in the houses. There is a general and constant exercise of brooms, pails, floor-brushes and mops all over Holland, and in some places, even, this kind of thing is carried so far, I am told, that the only trees set out are scrub-oaks."