John Hanning Speke questions about the height and extent of the lake could not be answered easily. Speke's eyes were still bothering him and he only saw a small part of the southern end of the lake and his view was blocked by islands in the lake so he could not judge the size of the lake well. However, Speke did estimate the elevation of Lake Victoria at 4000 feet by observing the temperature at which water boiled at that level. (This lake's being substantially higher than Lake Tanganyika did make it a more likely candidate for the source of the Nile.) From
Hamites language, culture, and much of their physiognomy as they intermarried with the local Bantus. The British explorer John Hanning Speke recorded one such account from a Wahuma governor in his book, "Journal of the Discovery of the Source of the Nile". According to Augustus Henry Keane, the Hima King Mutesa I also claimed Oromo (Galla) ancestors and still reportedly spoke an Oromo idiom, though such Hamitic-Semitic language had long since died out elsewhere in the region. The missionary R. W. Felkin, who had met the ruler, remarked that Mutesa "had lost the pure Mhuma features through admixture of Negro blood,