[SCIENCE AND NATURAL HISTORY]. DARWIN, Charles. The Descent of Man. London, 1871. 2 vols. 8o. Illustrated. (Hinges cracked, library bookplate to free endpapers.) Publisher's green cloth (joints and edges rubbed) -- LIVINGSTONE, David. Missionary Travels and Researches in South Africa. London, 1857. Large 8o. Illustrated, folding plates and maps. (Hinges cracked.) Publisher's stamped brown cloth (corners bumped). FIRST EDITONS, SECOND ISSUES. (3)