Speke expressed his conviction that the Luta N’zige must be a second source of the Nile, and that geographers would be dissatisfied that he had not explored it. To me this was most gratifying. I had been much disheartened at the idea that the great work was accomplished, and that nothing remained for exploration. I even said to Speke, “Does not one leaf of the laurel remain for me?” I now heard that the field was not only open, but that an additional interest was given to the exploration by the proof that the Nile flowed out of one great lake, the Victoria, but that it evidently must derive an additional supply from an unknown lake, as it entered it at the NORTHERN extremity, while the body of the lake came from the south. The fact of a great body of water such as the Luta N’zige extending in a direct line from south to north, while the general system of drainage of the Nile was from the same direction, showed most conclusively that the Luta N’zige, if it existed in the form assumed, must have an important position in the basin of the Nile.
My expedition had naturally been rather costly, and being in excellent order it would have been heartbreaking to return fruitlessly. I therefore arranged immediately for my departure, and Speke most kindly wrote in my journal such instructions as might be useful.