A New and Correct CHART of the WESTERN and SOUTHERN OCEANS Shewing the Variations of the COMPASS according to the latest and best Observations

Originally produced by Edmund Halley (of Halley's Comet fame) in 1700, this map shows magnetic variations of the compass, with a double-line crossing just south of Bermuda indicating the line of no magnetic variation and is corrected to include improvements to Halley's method developed in 1744. Place names are focused on the coasts, with the otherwise blank interiors of the continents supporting decorative cartouches. An image of a pair of diving ducks appears near the southern tip of South America along with a note explaining that "animals of a middle species between a bird and fish" can be seen in the seas in the area. It is also interesting in that the graticule goes through the map rather than drawn on the borders.Prime meridian is London, as shown in the ma