Alfred Russel Wallace,
The Malay Archipelago, Volume 2
“ They are accustomed to visit the same places every year, and the natives can have no fear of them, as may be alleged in excuse for their attacks on Europeans. In other extensive districts inhabited by the same Papuan races, such as Mysol, Salwatty, Waigiou, and some parts of the adjacent coast, the people have taken the first step in civilization, owing probably to the settlement of traders of mixed breed among them, and for many years no such attacks have taken place. ”
