Edwd. Weller. Relief shown by hachures. Latitudinal and longitudinal lines. Coordinates approximate and based on Greenwich meridian. Bar scale on map given in "geographical miles". Includes key showing "Author's route." Shows topography, drainage, natural resources (e.g.: copal, rice), vegetation (forests, swamps, deltas), plantations, ancient Portuguese ruins, islands off coast. Features slave trade travel routes. Descriptive text throughout. From J. Murray's Journal of the Royal Geographical Society, London, 1874.