I know this photo was either taken in the late nineteenth or, more likely, early 1900s. It is in the album of my Grandfather, Lt. Col G.S. Mardall who joined the Natal Mounted Police as a Trooper in 1879 and retired as Assistant Commissioner of the Natal Police in 1911. His cousin, Inspector Earle also joined in 1889, and became Head of the CID, but I don't think this is him. Any help gratefully received.