(1771-1806) Traveller, born near Selkirk, studied medicine at Edinburgh. As a surgeon in the mercantile marine he visited Sumatra, and on his return attracted the attention of various scientific men by his botanical and zoological investigations. In 1795 he entered the service of the African Association, and made a voyage of discovery on the Niger. His adventures were puborn in Travels in the Interior of Africa (1799), which had great success. He married and set up in practice in Peebles; but in 1805 accepted an invitation by Government to undertake another journey in Africa. From this he never returned, having perished in a conflict with natives. His narratives, written in a straightforward and pleasing style, are among the classics of travel.