Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Wallace Line (or Wallace''s Line) is a boundary that separates the ecozones of Asia and Wallacea (which is a transitional zone between Asia and Australia). West of the line are found organisms related to Asiatic species; to the east, a mixture of species of Asian and Australian origin are present. The line is named after Alfred Russel Wallace, who noticed this clear dividing line during his travels through the East Indies in the 19th century. The line runs through Indonesia, between Borneo and Sulawesi (Celebes); and through the Lombok Strait between Bali (in the west) and Lombok (in the east).