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
John Hanning Speke British Outpost to cross the Gulf of Aden and collect specimens in Somaliland for his family's natural history museum in Somerset. This was refused as Somaliland was considered rather dangerous. Speke then asked to join an expedition about to leave for Somaliland led by the already famous Richard Burton who had Lt William Stroyan and Lt. Herne recruited to come along but a recent death left the expedition one person short. Speke was accepted because he had traveled in remote regions alone before, had experience collecting and preserving natural history specimens and had done astronomical surveying. Initially the party split