Georg August Schweinfurth,
The heart of Africa, Vol. 1 (of 2…
(1873)
“ The Dinka must be reckoned amongst the darkest of races, but the deep black of their complexion gives place to a manifest tint of brown when the ashes are washed off with which they delight in rubbing themselves. When they have smeared themselves with oil, or taken a bath, their skin shines like dark bronze. ”
