Shows the tracks of Capt. James Cook's voyages from 1768-1780. Antarctica is not shown and is referenced as different forms of ice blocking the path. Bering Strait is shown impassible due to ice between both continents on July 1779. Engraved under the cartouche "O'clock Hours at London" and the bottom graticule shows hours at lines of longitude. This is one of the earliest maps we've seen indicating time.