We now return to the story. And here, I suppose, is the place where those sagacious children, who, when they are reading a book in which entertainment and instruction are combined, always skip all the instruction, and read only the story, will begin to read again, after having turned over the leaves of this chapter thus far, seeing they contain only explanations of the mode of navigating a ship, and saying nothing about Hilbert and Rollo. Now, before going any farther, I wish to warn all such readers, that they will not be able to comprehend at all clearly the complicated difficulties which Hilbert and the others got into in respect to the lottery without understanding all that has been explained in the preceding pages of this chapter. I advise them, therefore, if they have skipped any of it, to go back and read it all, and to read it slowly too, and with the utmost attention. And I advise them, moreover, if they do not perfectly understand it all, to ask some older person to read it over with them and explain it to them. If they are not willing to do this, but insist on skipping the first part of the chapter, I advise them to make complete work of it, and skip the last half too; for they certainly will not understand it. When Hilbert went back to the paddle box with his half sovereign, it was about eleven o'clock. The observation was to be made at twelve; and the results, both in respect to the observation and the reckoning, were to be calculated immediately afterward. The lottery which the men were making related to the number of miles which the ship would have made during the twenty-four hours. The men were just making up the list of subscribers to the tickets when Hilbert went up to them. He gave his half sovereign to the man who had the list. This man whom they called the Colonel, took the money, saying, "That's right, my lad," and put it in a little leather purse with the other half sovereigns. "What's your name, Bob?" said he. "Livingston," said Hilbert. "Bobby Livingston," said the Colonel, writing down the name on his list. "No," said Hilbert, contemptuously, "not Bobby Livingston. Hilbert Livingston." "O, never mind," said the Colonel; "it's all the same thing. Bobby means boy."