rafters, and firmly tied. The men then piled many more on top, binding each one to the rafter, until a complete hut had been built; although the height of the roof was fully eight feet, the ragged edges came down to the ground, entirely enclosing the sides and forming a snug retreat against which the elements raged without avail. After the first deluge had subsided other and smaller shelters were built. The Indians enjoyed the experience thoroughly; they threw aside all clothing, built fires over which fish and game were placed to roast, and squatted around the embers in a circle, doubtless indulging in pleasant reminiscences of the days before civilization with its restricting influences, and had come into their care-free existence. Early next morning we were awakened by the reverberating howls of monkeys. The Indians rushed in a body from their shelters and, snatching up bows and arrows, ran in pursuit. A troop of red howlers had come to the _chuchilla_ near our shelters; we could see none of the animals, but the tops of the canes waving as if agitated by a violent gust of wind told us of their whereabouts. Soon we heard shouts followed by the twang of bows and the snarl of arrows as they ripped through the flesh of the luckless victims. This continued until the creatures disappeared in the interior of the dense jungle, and then the hunters returned, dragging their quarry after them. We were eager to continue on our way, but in view of the efficient and willing service rendered by the men the night before it was decided to wait a few hours and permit them to have a feast. A huge fire was built, and the monkeys, after having been skinned and washed, were set on spits to roast. The Indians crowded around, sang and shouted, and tore off and ate chunks of the half-roasted flesh. In a short time our orderly Yuracarés had returned to the realms of savagery, and were indulging in a performance such as I had repeatedly seen among the wild Nhambiquaras of Matto Grosso.