send in her; and then there is nothing for him to do about it but to make out an inventory of the articles and send it to the agent at the docks, and the business is all done very regularly for him.
"Only," continued Mr. George, "it is very necessary that he should know how to plan his voyages so as to make them come out well, with a good profit at the end, otherwise he will soon go to ruin."
Mr. George and Rollo sat near the drawbridge talking in this manner for about half an hour. Then the men began to return from their dinner; and very soon afterwards the quays, and slips, and warehouses were all alive again with business and bustle. They then rose and began rambling about here and there, to watch the various operations that were going on. They saw during this ramble a great many curious and wonderful things, too numerous to be specified here. They remained in the docks for more than two hours, and then went home by one of the little steamers on the river.
Chapter XVI.
The Tower and the Tunnel.
The famous Tunnel under the Thames, and the still more famous Tower of London, are very near together, and strangers usually visit both on one and the same excursion.
The Tower, as has already been explained, was originally a sort of fortress, or castle, built on the bank of the river, below the city, to defend it from any enemy that might attempt to come up to it by ships from the sea. The space enclosed by the walls was very large; and as in modern times many new buildings and ranges of buildings have been erected within, with streets and courts between them, the place has now the appearance of being a little town enclosed by walls, and surrounded by a ditch with bridges, and standing in the midst of a large town.
Rollo and Mr. George passed over the ditch that surrounded the Tower by means of a drawbridge. Before they entered the gateway, however, they were conducted to a small building