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Map of eastern New Guinea, showing the routes—mainly along rivers—explored by Sir William MacGregor, the administrator of British New Guinea. The borders with the German colonial territory (Kaiser-Wilhelmsland) and Dutch New Guinea are also marked.

On this map of Southeast Asia, numerous small islands, shoals and reefs are marked and named, especially in the South China Sea and around the Sunda and Maluku islands. Submarine cables to carry telegraph messages around the region are also shown.