"Have you found Paris?" said he.
"Yes," said Rollo; "I have got my finger on it."
"In the first place, then," said Mr. George, "there is a railway that goes east from Paris a hundred miles across France to Strasbourg on the Rhine. See if you can find Strasbourg on the Rhine."
"Yes," said Rollo; "here it is."
"Then," said Mr. George, "we take another railway and go south, up the Rhine, towards Switzerland."
"Down the Rhine," said Rollo, correcting his uncle; "it is down."
"No," rejoined Mr. George. "It is down on the map; that is, it is down the page; but it is really up the river. The Rhine flows to the north. It collects the waters of a hundred glaciers in Switzerland and carries them north into the North Sea."
"Well," said Rollo.
"This railway," continued Mr. George, "will take us up from Strasbourg, along the bank of the Rhine, to Basle, which is in Switzerland, just across the frontier. It is there, I suppose, that we shall have to show our passports; and then we shall know if you got them stamped right."
"I did get them stamped right, I am very sure," said Rollo.