1840 Black Map of the World on Mercator's Projection

A fine example of Adam and Charles Black's 1840 map of the world on Mercator's Projection. An interesting map of the world issued just as most of the earth's non-polar shore has been explored. Gone are many of the errors of the previous century with the coastlines of the Arctic, the American Northwest, Australia, and New Zealand accurately rendered. Inland though, much remained confused. Vast stretches of unmapped territory and speculative cartography fill central Asia, South America, the western United States, Africa and Australia. This map was engraved by G. Aikman for issue in the 1840 edition of Black's General Atlas.