National Geographic : 1952 Sep
Against a Towering Forest Backdrop, Chicle Hunters Pause to Stare at a White Woman At dawn waking birds fill the jungle with hysterical melodies. By siesta time only a curassow call breaks the drowsy stillness. At 5 p. m. the forest comes alive again with the screech of parrots. Darkness brings a beating, insistent rhythm punctuated by the trombonelike shrieks of tree frogs and the howling of monkeys. These oarsmen were rowing a Brazilian trader's craft up the Vaupes River when they passed the author's canoe.