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This map of the border region between China, Birma (Myanmar), Siam (Thailand and Laos) and Anam (Vietnam) is marked with the routes of five expeditions of the region from 1837 to 1868. Locations of Roman Catholic missionaries are also shown.

From August Petermann's ‘Geographische Mittheilungen’, this map of New Guinea and neighbouring islands is marked with a maritime route from the western tip of New Guinea that is labelled ‘from Batavia to Hong Kong in 35 days’ and dated 1846.