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London to Zanzibar, 1859.
The design--The Preparations--Departure--The Cape--The Zulu Kafirs--Turtle-Turning--Capture of a Slaver--Arrive at Zanzibar--Local Politics and News Since Last Visit--Organisation of the Expedition.
My third expedition in Africa, which was avowedly for the purpose of establishing the truth of my assertion that the Victoria N'yanza, which I discovered on the 30th July 1858, would eventually prove to be the source of the Nile, may be said to have commenced on the 9th May 1859, the first day after my return to England from my second expedition, when, at the invitation of Sir.

R.I.Murchison, I called at his house to show him my map for the information of the Royal Geographical Society.

Sir Roderick, I need only say, at once accepted my views; and, knowing my ardent desire to prove to the world, by actual inspection of the exit, that the Victoria N'yanza was the source of the Nile, seized the enlightened view, that such a discovery should not be lost to the glory of England and the Society of which he was President; and said to me, "Speke, we must send you there again." I was then officially directed, much against my own inclination, to lecture at the Royal Geographical Society on the geography of Africa, which I had, as the sole surveyor of the second expedition, laid down on our maps.

[4] A council of the Geographical Society was now convened to ascertain what projects I had in view for making good my discovery by connecting the lake with the Nile, as also what assistance I should want for that purpose.
Some thought my best plan would be to go up the Nile, which seemed to them the natural course to pursue, especially as the Nile was said, though nobody believed it, to have been navigated by expeditions sent out by Mehemet Ali, Viceroy of Egypt, up to 3 deg.