William Lewis Herndon, Lieutenant, U.S.N., Exploration of the Valley of the Amazon… (1853)
“ The Cocamas of Nauta are great fishermen and boatmen, and I think are bolder than most of the civilized tribes on the river. They make incursions, now and then, into the country of the Mayorunas — savages who inhabit the right banks of the Ucayali and Amazon — fight battles with them, and bring home prisoners, generally children. When travelling in small numbers, or engaged in their ordinary avocations on the river, they studiously avoid the country of their enemies, who retaliate whenever opportunity offers. ”
