The Tunnel is a subterranean passage under the Thames, made at a place where it was impossible to have a bridge, on account of the shipping. They expected, when they made the Tunnel, that it would be used a great deal by persons wishing to cross the river. But it is found, on trial, that almost every body who wishes to go across the river at that place prefers to go in a boat rather than go down into the Tunnel. The reason is, that the Tunnel is so far below the bed of the river that you have to go down a long series of flights of stairs before you get to the entrance to it; and then, after going across, you have to come up just as many stairs before you get into the street again. This is found to be so troublesome and fatiguing that almost every one who has occasion to go across the river prefers to cross it by a ferry boat on the surface of the water; and scarcely any one goes into the Tunnel except those who wish to visit it out of curiosity. The stairs that lead down to the passage under the river wind around the sides of an immense well, or shaft, made at the entrance of it. When Mr. George and Rollo reached the bottom of these stairs they heard loud sounds of music, and saw a brilliant light at the entrance to the Tunnel. On going in, they saw that the Tunnel itself was double, as it consisted of two vaulted passage ways, with a row of piers and arches between them. One of these passage ways was closed up; the other was open, and was lighted brilliantly with gas all the way through. But what most attracted Rollo's attention was, that the spaces between the piers all along the Tunnel were occupied with little shops, each one having a man, a woman, or a child to attend it. As Mr. George and Rollo walked along, those people all asked them to stop and buy something at their shops. There were pictures of all kinds, and little boxes, and views of the Tunnel, with magnifying glasses to make them look real, and needle cases, and work boxes, and knickknacks of all kinds for people to buy and carry home as souvenirs, or to show to their friends and say that they bought them in the Tunnel. [Illustration: SHOPPING IN THE TUNNEL.] Besides these things that were for sale, there were various objects of interest and curiosity, such as electric machines where people might take shocks, and scales where they might be weighed, and refreshment rooms that were formed in the passage way that was not used for travel; and in one place there was a little ball room arranged there, where a party might, if they chose, stop and have a dance. Rollo and Mr. George walked through the Tunnel, and then came back again. As they came back, Rollo stopped at one of the shops and bought a pretty little round box, which he said would do for a wafer box, and would also serve as a souvenir of his visit to the place.