Robert Sinker, Dictionary of National Biography… (1892)
“ Keith-Falconer acted as university examiner in 1883 and 1884. He was, however, becoming engrossed with the idea of mission-work in a field where his knowledge of Arabic might be directly utilised; and early in 1885 he was led on reading a paper by Major-general Haig, R.E., to fix upon Aden as presenting many advantages for communication with the interior of Africa. He made a preliminary visit of four months at the end of 1885 to test the climate, and acquired some medical knowledge with a view to founding a hospital, which formed part of his scheme. ”
