A voyage to Abyssinia, and travels into the interior of that country : executed under the orders of the British government, in the years 1809 and 1810 : in which are included, an account of the Portuguese settlements on the east coast of Africa, visited in the course of the voyage : a concise narrative of late events in Arabia Felix : and some particulars respecting the aboriginal African tribes, extending from Mosambique to the borders of Egypt : together with vocabularies of their respective languages : illustrated with a map of Abyssinia, numerous engravings, and charts