A one-horned white rhinoceros

Among a collection of, mostly anthropological, photographs, made in 1870 by M. Ernest H?ritte, and presented in 1905 by Colonel A.G. Anson to the Natural History Museum, is one of a freshly killed white rhinoceros, which is of interest from two points of view. In the original album the photograph is labelled Rhinoc?ros ? une corne, and although examination with a lens reveals the presence of a minute tubercle representing a second horn, the description is practically correct. The animal represented in M. H?ritte's photograph may accordingly be regarded as representing the extreme stage in the degeneration of the second horn, and is in no wise entitled to recognition as a distinct race, still less a species.