‘Speke's recounting of the 1857-1858 expedition he shared with Captain Sir Richard Francis Burton to find the source of the Nile River. Starting from Zanzibar, the pair trekked into East Africa, eventually discovering lake Tanganyika’ (Czech).

The additional pages in this copy begin on page 373 with the sentence: ‘In a few words more I shall briefly describe how the expedition came out of Africa, and what became of the men who brought us safely to the end of our journey’. Speke relates disagreements with Burton over where they should proceed next, and the payment of their guides and porters; the generosity of Colonel Rigby, and the Sultan of Zanzibar who “saved our honour by giving the Béluches a present of 2300 dollars”; writing to Rigby ‘on behalf of the men who had brought us through the journey, and begged him to see them righted [as Burton had refused to pay them]’; the unexpected arrival of Burton to England, and their lectures at the Royal Geographical Society, at which Speke records ‘To show how the Nile drained the Victoria N’yanza, I got Mr Findlay (the Society’s mapper) to draw my a diagram, and with that hanging over our heads, I, for the first time, pro-pounded in public my opinion that the Victoria N’yanza would eventually prove to be the source of the Nile.’