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
Sitatunga is common in many areas such as the Okavango Delta and Bangweulu Swamp. The scientific name of the sitatunga is "Tragelaphus spekii". The species was first described by the English explorer John Hanning Speke in 1863. Speke first observed the sitatunga at a lake named "Little Windermere" (now Lake Lwelo, located in Kagera, Tanzania). In his book "Journal of the Discovery of the Source of the Nile", Speke called the animal "nzoé" (Kiswahili name for the animal) or "water-boc" (due to its resemblance to the waterbuck). The scientific name has often been misstated as "T. spekei", and either Speke or