Walter Frederick Sutherst was the co-author of Friedrich Kehrmann for a paper, "Ueber Naphtinduline und Naphtazonium-Verbindungen", in the Berichte der Deutschen Chemischen Gesellschaft in 1899. The next year Walter-Frederick Sutherst submitted a thesis on Recherches sur les derives de naphtazonium (40p) at Geneva, Switzerland. He is presumably the same person as Dr W.F. Sutherst, who contributed an article on "Manganese compounds as fertilisers for maize" to the Transvaal Agricultural Journal (Vol. 6, p. 437) for 1907/8.