Justus Perthes
45 x 54 cm
A fascinating depth chart of the Pacific Ocean, showing the routes of three important oceanographic expeditions: the American Tuscarora Expedition (1873-6), the British Challenger Expedition (1874-6), and the German Gazelle Expedition (1875-6). Detailed depth soundings are given along the route of each expedition, and the newly-discovered ocean depths and trenches are coloured in darker shades of blue. The map coves the entirety of the Pacific Ocean from Japan and Australia to the coast of North and South America.
Printed colour. [AUNZ3017]

