A lovely double hemisphere map with Mitchell's unique floral border. Below the world map are three smaller maps: The World on a Polar Projection; North Polar Region; Land and Water Hemispheres. A comparative diagram of the world's rivers is shown above the maps with the note "Sea of Uniamezi Probable Source of the Nile." Engraved by W. Williams. A Time Table Indicating the Difference in Time Between the Principal Cities of the World... appears on verso.