(1840-1841).First edition. Large folding map & folding plate in rear pocket. 8vo. Modern half morocco, gilt. vi, [ii], 544pp. Berlin, 1848.
The author took part in the second European expedition to travel up the White Nile, journeying as far as Gondokoro. His work was much used by later explorers including Burton and Speke. Ibrahim-Hilmy II, p324.
