"Well, sir, I take for granted that all your calculations are correct, but allow me to draw from them a rigorous and definite conclusion."
"Go on, my boy—have your say," cried my uncle goodhumoredly.
"At the place where we now are, under the latitude of Iceland, the terrestrial depth is about fifteen hundred and eighty-three leagues."
"Fifteen hundred eighty-three and a quarter."
"Well, suppose we say sixteen hundred in round numbers. Now, out of a voyage of sixteen hundred leagues we have completed sixteen."
"As you say, what then?"
"At the expense of a diagonal journey of no less than eighty-five leagues."
"Exactly."
"We have been twenty days about it."
"Exactly twenty days."