Shows routes and dates of various voyages. Includes profile of Wrangel Island in Russia. Relief shown by hachures; depths shown by soundings. "Gez. V. Fr. Hanemann." "Druck v. C. Hellfartl." From Petermann's Geographische Mittheilungen. ...
Relief shown by hachures. Shows the routes of Sherard Osborn, Gustave Lamber, and Augustus Petermann. Insets: Route de l'Expedition Francaise, Projection Etoilee du Dr. Jaeger -- Regions Polaires Australes -- Marche supposee du Pole Magnetique --...
Shows dated exploration routes of various explorers, as well as locations of icebergs, pack ice, shoals, and other nautical features. Relief shown by hachures and spot heights; depths shown by isolines. "Ger. v. Ernst Debes." "Gest. v. H. Alt u....