"I have it."

"Now, follow the same parallel and arrive at Kazeh."

"I have done so."

"Run up again along the thirty-third degree of longitude
to the opening of Lake Oukereoue, at the point where
Lieutenant Speke had to halt."

"I am there; a little more, and I should have tumbled
into the lake."

"Very good! Now, do you know what we have the
right to suppose, according to the information given by
the tribes that live along its shores?"

"I haven't the least idea."

"Why, that this lake, the lower extremity of which is
in two degrees and thirty minutes, must extend also two
degrees and a half above the equator."

"Really!"

"Well from this northern extremity there flows a
stream which must necessarily join the Nile, if it be not
the Nile itself."

"That is, indeed, curious."