National Geographic : 1926 Apr
PRECARIOUS SLEEPING ACCOMMODATIONS: THE ONLY BED KNOWN TO THEUPRIVER INDIANS It is remarkable how the natives rest in such contrivances. As a matter of fact, they sleep very lightly,but put inquite long hours, for they goto bed at nightfall, as a rule, and often are to be found in their hammocks in the daytime, if in camp. They may beseen around acampfire intheevening smoking and drying fish; if not so engaged, they are likely to be in hammocks. Mosquito nets are unknown among theIndians; this accounts for some of the wakefulness of native sleepers. If in a malocca, or community hut, the presence of smokefrom cookfires tends tolessen the trouble from mosquitoes.