Spherical chart comprehending the west coast of America, from the seventh degree of south latitidue to the ninth degree of north latitude : Surveyed by order of the king of Spain in 1791
Relief shown by hachures. Depths shown by soundings. "Etched by H. Wilson." "Approved by the Chart Committee of the Admiralty." Includes five coastal profiles. Includes diagram for measuring a degree of the meridian near the Equator in 1736-1744.