144 ‘MIE FEAST OF THE FULL MOON.” sloth, and the voices of the curassoa, the parraka, and some other gallinaccous birds. When the jaguars approached the skirt of the forest, our dog, which till then had never ceased barking, began to howl and seck for shelter beneath our hammocks. Sometimes, after a long silence, the cry of the tiger came from the top of the trees; and in this case it was followed by the sharp and long whistling of the monkeys, which appeared to flee from the danger that threatened them. ‘“T notice every circumstance of these nocturnal scenes, because, being recently embarked on the Rio Apure, we were not yet accustomed to them. We heard the same noises repeated during the course of whole months, whenever the forest ap- proached the bed of the rivers. “When the natives are interrogated on the causes of this tremendous noise made by the beasts of the forest at certain hours of the night, they reply gaily, “‘They are keeping the feast of the full moon.” I believe this agitation is most frequently the effect of some contest that has arisen in the depths of the forest. The jaguars, for instance, pursue the peccaris and the tapirs, which, having no defence but in their numbers, flee in close troops, and break down the bushes they find in their way. Affrighted at this struggle, the timid and mistrustful monkeys answer from the tops of